diff options
Diffstat (limited to 'target/linux/coldfire/patches/048-Fix-i2c-driver-bug-when-reinserting-as-module.patch')
| -rw-r--r-- | target/linux/coldfire/patches/048-Fix-i2c-driver-bug-when-reinserting-as-module.patch | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/target/linux/coldfire/patches/048-Fix-i2c-driver-bug-when-reinserting-as-module.patch b/target/linux/coldfire/patches/048-Fix-i2c-driver-bug-when-reinserting-as-module.patch new file mode 100644 index 000000000..a85aa5611 --- /dev/null +++ b/target/linux/coldfire/patches/048-Fix-i2c-driver-bug-when-reinserting-as-module.patch @@ -0,0 +1,75 @@ +From 2c83888b2170d3883c9316c4d94dddc4b7f9ec68 Mon Sep 17 00:00:00 2001 +From: Alison Wang <b18965@freescale.com> +Date: Thu, 4 Aug 2011 09:59:55 +0800 +Subject: [PATCH 48/52] Fix i2c driver bug when reinserting as module + +Signed-off-by: Alison Wang <b18965@freescale.com> +--- + drivers/i2c/busses/i2c-mcf-slave.c | 14 ++++++++++++++ + drivers/i2c/busses/i2c-mcf.c | 14 ++++++++++++++ + 2 files changed, 28 insertions(+), 0 deletions(-) + +--- a/drivers/i2c/busses/i2c-mcf-slave.c ++++ b/drivers/i2c/busses/i2c-mcf-slave.c +@@ -273,8 +273,15 @@ static int __init gen_i2c_proc_init(void + return -ENOMEM; + return 0; + } ++ ++static int gen_i2c_proc_deinit(void) ++{ ++ remove_proc_entry("driver/i2c-adaptor-register", NULL); ++ return 0; ++} + #else + static inline int gen_i2c_proc_init(void) { return 0; } ++static inline int gen_i2c_proc_deinit(void) { return 0; } + #endif /* CONFIG_PROC_FS */ + + /* +@@ -345,6 +352,13 @@ static int __init i2c_coldfire_init(void + + static void __exit i2c_coldfire_exit(void) + { ++ int retval; ++ ++ retval = gen_i2c_proc_deinit(); ++ if (retval < 0) ++ printk(KERN_INFO "remove /proc/i2c-adaptor-register " ++ "for i2c slave mode failed!\n"); ++ + /* disable I2C and Interrupt */ + MCF_I2CR &= ~(MCF_I2CR_IEN | MCF_I2CR_IIEN); + free_irq(IRQ, NULL); +--- a/drivers/i2c/busses/i2c-mcf.c ++++ b/drivers/i2c/busses/i2c-mcf.c +@@ -669,8 +669,15 @@ static int __init gen_i2c_proc_init(void + return -ENOMEM; + return 0; + } ++ ++static int gen_i2c_proc_deinit(void) ++{ ++ remove_proc_entry("driver/i2c-adaptor-register", NULL); ++ return 0; ++} + #else + static inline int gen_i2c_proc_init(void) { return 0; } ++static inline int gen_i2c_proc_deinit(void) { return 0; } + #endif /* CONFIG_PROC_FS */ + + static int __init coldfire_i2c_init(void) +@@ -687,6 +694,13 @@ static int __init coldfire_i2c_init(void + + static void __exit coldfire_i2c_exit(void) + { ++ int retval; ++ ++ retval = gen_i2c_proc_deinit(); ++ if (retval < 0) ++ printk(KERN_INFO "remove /proc/i2c-adaptor-register " ++ "for i2c master mode failed!\n"); ++ + platform_driver_unregister(&mcf_i2c_driver); + } + |