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kernel: fix arch-dependent bug in hso module

Browse Source 
Currently, the module causes an oops at least on rt5350. These patches
have been accepted upstream at:
git://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git

Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>

SVN-Revision: 37931
v19.07.3_mercusys_ac12_duma
Felix Fietkau 11 years ago
parent 7198523e6e
commit 11926c2fd8
10 changed files with 490 additions and 0 deletions
Show Stats Download Patch File Download Diff File

45
target/linux/generic/patches-3.10/007-hso-Earlier-catch-of-error-condition.patch
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@ -0,0 +1,45 @@
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:07 -0700
Subject: [PATCH 1/2] hso: Earlier catch of error condition
There is no need to get an interface specification if we know it's the
wrong one.
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cba1d46..5fb36ed 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
struct hso_shared_int *shared_int;
struct hso_device *tmp_dev = NULL;
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
+ dev_err(&interface->dev, "Not our interface\n");
+ return -ENODEV;
+ }
+
if_num = interface->altsetting->desc.bInterfaceNumber;
/* Get the interface/port specification from either driver_info or from
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
else
port_spec = hso_get_config_data(interface);
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
- dev_err(&interface->dev, "Not our interface\n");
- return -ENODEV;
- }
/* Check if we need to switch to alt interfaces prior to port
* configuration */
if (interface->num_altsetting > 1)
--
1.7.9.5

53
target/linux/generic/patches-3.10/008-hso-Fix-stack-corruption-on-some-architectures.patch
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From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:19 -0700
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
As Sergei Shtylyov explained in the #mipslinux IRC channel:
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 5fb36ed..86292e6 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2816,13 +2816,16 @@ exit:
static int hso_get_config_data(struct usb_interface *interface)
{
struct usb_device *usbdev = interface_to_usbdev(interface);
- u8 config_data[17];
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
s32 result;
+ if (!config_data)
+ return -ENOMEM;
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
0x86, 0xC0, 0, 0, config_data, 17,
USB_CTRL_SET_TIMEOUT) != 0x11) {
+ kfree(config_data);
return -EIO;
}
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
if (config_data[16] & 0x1)
result |= HSO_INFO_CRC_BUG;
+ kfree(config_data);
return result;
}
--
1.7.9.5

45
target/linux/generic/patches-3.3/007-hso-Earlier-catch-of-error-condition.patch
Unescape Escape View File

@ -0,0 +1,45 @@
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:07 -0700
Subject: [PATCH 1/2] hso: Earlier catch of error condition
There is no need to get an interface specification if we know it's the
wrong one.
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cba1d46..5fb36ed 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
struct hso_shared_int *shared_int;
struct hso_device *tmp_dev = NULL;
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
+ dev_err(&interface->dev, "Not our interface\n");
+ return -ENODEV;
+ }
+
if_num = interface->altsetting->desc.bInterfaceNumber;
/* Get the interface/port specification from either driver_info or from
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
else
port_spec = hso_get_config_data(interface);
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
- dev_err(&interface->dev, "Not our interface\n");
- return -ENODEV;
- }
/* Check if we need to switch to alt interfaces prior to port
* configuration */
if (interface->num_altsetting > 1)
--
1.7.9.5

53
target/linux/generic/patches-3.3/008-hso-Fix-stack-corruption-on-some-architectures.patch
Unescape Escape View File

@ -0,0 +1,53 @@
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:19 -0700
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
As Sergei Shtylyov explained in the #mipslinux IRC channel:
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 5fb36ed..86292e6 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2816,13 +2816,16 @@ exit:
static int hso_get_config_data(struct usb_interface *interface)
{
struct usb_device *usbdev = interface_to_usbdev(interface);
- u8 config_data[17];
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
s32 result;
+ if (!config_data)
+ return -ENOMEM;
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
0x86, 0xC0, 0, 0, config_data, 17,
USB_CTRL_SET_TIMEOUT) != 0x11) {
+ kfree(config_data);
return -EIO;
}
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
if (config_data[16] & 0x1)
result |= HSO_INFO_CRC_BUG;
+ kfree(config_data);
return result;
}
--
1.7.9.5

45
target/linux/generic/patches-3.6/007-hso-Earlier-catch-of-error-condition.patch
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@ -0,0 +1,45 @@
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:07 -0700
Subject: [PATCH 1/2] hso: Earlier catch of error condition
There is no need to get an interface specification if we know it's the
wrong one.
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cba1d46..5fb36ed 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
struct hso_shared_int *shared_int;
struct hso_device *tmp_dev = NULL;
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
+ dev_err(&interface->dev, "Not our interface\n");
+ return -ENODEV;
+ }
+
if_num = interface->altsetting->desc.bInterfaceNumber;
/* Get the interface/port specification from either driver_info or from
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
else
port_spec = hso_get_config_data(interface);
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
- dev_err(&interface->dev, "Not our interface\n");
- return -ENODEV;
- }
/* Check if we need to switch to alt interfaces prior to port
* configuration */
if (interface->num_altsetting > 1)
--
1.7.9.5

53
target/linux/generic/patches-3.6/008-hso-Fix-stack-corruption-on-some-architectures.patch
Unescape Escape View File

@ -0,0 +1,53 @@
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:19 -0700
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
As Sergei Shtylyov explained in the #mipslinux IRC channel:
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 5fb36ed..86292e6 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2816,13 +2816,16 @@ exit:
static int hso_get_config_data(struct usb_interface *interface)
{
struct usb_device *usbdev = interface_to_usbdev(interface);
- u8 config_data[17];
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
s32 result;
+ if (!config_data)
+ return -ENOMEM;
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
0x86, 0xC0, 0, 0, config_data, 17,
USB_CTRL_SET_TIMEOUT) != 0x11) {
+ kfree(config_data);
return -EIO;
}
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
if (config_data[16] & 0x1)
result |= HSO_INFO_CRC_BUG;
+ kfree(config_data);
return result;
}
--
1.7.9.5

45
target/linux/generic/patches-3.8/007-hso-Earlier-catch-of-error-condition.patch
Unescape Escape View File

@ -0,0 +1,45 @@
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:07 -0700
Subject: [PATCH 1/2] hso: Earlier catch of error condition
There is no need to get an interface specification if we know it's the
wrong one.
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cba1d46..5fb36ed 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
struct hso_shared_int *shared_int;
struct hso_device *tmp_dev = NULL;
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
+ dev_err(&interface->dev, "Not our interface\n");
+ return -ENODEV;
+ }
+
if_num = interface->altsetting->desc.bInterfaceNumber;
/* Get the interface/port specification from either driver_info or from
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
else
port_spec = hso_get_config_data(interface);
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
- dev_err(&interface->dev, "Not our interface\n");
- return -ENODEV;
- }
/* Check if we need to switch to alt interfaces prior to port
* configuration */
if (interface->num_altsetting > 1)
--
1.7.9.5

53
target/linux/generic/patches-3.8/008-hso-Fix-stack-corruption-on-some-architectures.patch
Unescape Escape View File

@ -0,0 +1,53 @@
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:19 -0700
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
As Sergei Shtylyov explained in the #mipslinux IRC channel:
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 5fb36ed..86292e6 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2816,13 +2816,16 @@ exit:
static int hso_get_config_data(struct usb_interface *interface)
{
struct usb_device *usbdev = interface_to_usbdev(interface);
- u8 config_data[17];
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
s32 result;
+ if (!config_data)
+ return -ENOMEM;
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
0x86, 0xC0, 0, 0, config_data, 17,
USB_CTRL_SET_TIMEOUT) != 0x11) {
+ kfree(config_data);
return -EIO;
}
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
if (config_data[16] & 0x1)
result |= HSO_INFO_CRC_BUG;
+ kfree(config_data);
return result;
}
--
1.7.9.5

45
target/linux/generic/patches-3.9/007-hso-Earlier-catch-of-error-condition.patch
Unescape Escape View File

@ -0,0 +1,45 @@
From 35e57e1b49a351aa804dab6010cd46ae6112a541 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:07 -0700
Subject: [PATCH 1/2] hso: Earlier catch of error condition
There is no need to get an interface specification if we know it's the
wrong one.
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index cba1d46..5fb36ed 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2886,6 +2886,11 @@ static int hso_probe(struct usb_interface *interface,
struct hso_shared_int *shared_int;
struct hso_device *tmp_dev = NULL;
+ if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
+ dev_err(&interface->dev, "Not our interface\n");
+ return -ENODEV;
+ }
+
if_num = interface->altsetting->desc.bInterfaceNumber;
/* Get the interface/port specification from either driver_info or from
@@ -2895,10 +2900,6 @@ static int hso_probe(struct usb_interface *interface,
else
port_spec = hso_get_config_data(interface);
- if (interface->cur_altsetting->desc.bInterfaceClass != 0xFF) {
- dev_err(&interface->dev, "Not our interface\n");
- return -ENODEV;
- }
/* Check if we need to switch to alt interfaces prior to port
* configuration */
if (interface->num_altsetting > 1)
--
1.7.9.5

53
target/linux/generic/patches-3.9/008-hso-Fix-stack-corruption-on-some-architectures.patch
Unescape Escape View File

@ -0,0 +1,53 @@
From e75dc677ff8d06ffa61bef6fee436227ae5440c6 Mon Sep 17 00:00:00 2001
From: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Date: Wed, 21 Aug 2013 01:43:19 -0700
Subject: [PATCH 2/2] hso: Fix stack corruption on some architectures
As Sergei Shtylyov explained in the #mipslinux IRC channel:
[Mon 2013-08-19 12:28:21 PM PDT] <headless> guys, are you sure it's not "DMA off stack" case?
[Mon 2013-08-19 12:28:35 PM PDT] <headless> it's a known stack corruptor on non-coherent arches
[Mon 2013-08-19 12:31:48 PM PDT] <DonkeyHotei> headless: for usb/ehci?
[Mon 2013-08-19 12:34:11 PM PDT] <DonkeyHotei> headless: explain
[Mon 2013-08-19 12:35:38 PM PDT] <headless> usb_control_msg() (or other such func) should not use buffer on stack. DMA from/to stack is prohibited
[Mon 2013-08-19 12:35:58 PM PDT] <headless> and EHCI uses DMA on control xfers (as well as all the others)
Signed-off-by: Daniel Gimpelevich <daniel@gimpelevich.san-francisco.ca.us>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/usb/hso.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 5fb36ed..86292e6 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2816,13 +2816,16 @@ exit:
static int hso_get_config_data(struct usb_interface *interface)
{
struct usb_device *usbdev = interface_to_usbdev(interface);
- u8 config_data[17];
+ u8 *config_data = kmalloc(17, GFP_KERNEL);
u32 if_num = interface->altsetting->desc.bInterfaceNumber;
s32 result;
+ if (!config_data)
+ return -ENOMEM;
if (usb_control_msg(usbdev, usb_rcvctrlpipe(usbdev, 0),
0x86, 0xC0, 0, 0, config_data, 17,
USB_CTRL_SET_TIMEOUT) != 0x11) {
+ kfree(config_data);
return -EIO;
}
@@ -2873,6 +2876,7 @@ static int hso_get_config_data(struct usb_interface *interface)
if (config_data[16] & 0x1)
result |= HSO_INFO_CRC_BUG;
+ kfree(config_data);
return result;
}
--
1.7.9.5
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