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76 lines
2.0 KiB
Diff
76 lines
2.0 KiB
Diff
From 2c83888b2170d3883c9316c4d94dddc4b7f9ec68 Mon Sep 17 00:00:00 2001
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From: Alison Wang <b18965@freescale.com>
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Date: Thu, 4 Aug 2011 09:59:55 +0800
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Subject: [PATCH 48/52] Fix i2c driver bug when reinserting as module
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Signed-off-by: Alison Wang <b18965@freescale.com>
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---
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drivers/i2c/busses/i2c-mcf-slave.c | 14 ++++++++++++++
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drivers/i2c/busses/i2c-mcf.c | 14 ++++++++++++++
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2 files changed, 28 insertions(+), 0 deletions(-)
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--- a/drivers/i2c/busses/i2c-mcf-slave.c
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+++ b/drivers/i2c/busses/i2c-mcf-slave.c
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@@ -273,8 +273,15 @@ static int __init gen_i2c_proc_init(void
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return -ENOMEM;
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return 0;
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}
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+
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+static int gen_i2c_proc_deinit(void)
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+{
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+ remove_proc_entry("driver/i2c-adaptor-register", NULL);
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+ return 0;
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+}
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#else
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static inline int gen_i2c_proc_init(void) { return 0; }
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+static inline int gen_i2c_proc_deinit(void) { return 0; }
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#endif /* CONFIG_PROC_FS */
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/*
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@@ -345,6 +352,13 @@ static int __init i2c_coldfire_init(void
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static void __exit i2c_coldfire_exit(void)
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{
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+ int retval;
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+
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+ retval = gen_i2c_proc_deinit();
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+ if (retval < 0)
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+ printk(KERN_INFO "remove /proc/i2c-adaptor-register "
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+ "for i2c slave mode failed!\n");
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+
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/* disable I2C and Interrupt */
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MCF_I2CR &= ~(MCF_I2CR_IEN | MCF_I2CR_IIEN);
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free_irq(IRQ, NULL);
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--- a/drivers/i2c/busses/i2c-mcf.c
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+++ b/drivers/i2c/busses/i2c-mcf.c
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@@ -669,8 +669,15 @@ static int __init gen_i2c_proc_init(void
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return -ENOMEM;
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return 0;
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}
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+
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+static int gen_i2c_proc_deinit(void)
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+{
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+ remove_proc_entry("driver/i2c-adaptor-register", NULL);
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+ return 0;
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+}
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#else
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static inline int gen_i2c_proc_init(void) { return 0; }
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+static inline int gen_i2c_proc_deinit(void) { return 0; }
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#endif /* CONFIG_PROC_FS */
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static int __init coldfire_i2c_init(void)
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@@ -687,6 +694,13 @@ static int __init coldfire_i2c_init(void
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static void __exit coldfire_i2c_exit(void)
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{
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+ int retval;
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+
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+ retval = gen_i2c_proc_deinit();
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+ if (retval < 0)
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+ printk(KERN_INFO "remove /proc/i2c-adaptor-register "
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+ "for i2c master mode failed!\n");
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+
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platform_driver_unregister(&mcf_i2c_driver);
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}
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