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Message-Id: <200909081148.23791.lukas.karas@centrum.cz>
Date: Tue, 8 Sep 2009 11:48:23 +0200
From: Lukáš Karas <lukas.karas@...trum.cz>
To: linux-kernel@...r.kernel.org
Subject: [PATCH] fix saa7134-input.c for IR controller over i2c
Hi All,
I have DVB card with IR controller connected over i2c bus (this card is
supported by module saa7134). This IR controller work mostly fine, bud when I
execute
rmmod ir-kbd-i2c and modprobe ir-kbd-i2c again, IR controller stops working.
I found problem in aa7134-input.c, metod saa7134_probe_i2c_ir.
Please, see this:
struct IR_i2c_init_data init_data; // inicialize init_data as local variable
...
info.platform_data = &init_data; // put pointer to local variable to
// platform_data
...
i2c_new_device(&dev->i2c_adap, &info); // publish this for other modules
...
} // end of function, so kernel can use memory used for local variable again
Here is my patch for fix this problem:
Signed-off-by: Lukas Karas <lukas.karas@...trum.cz>
--- ./video.2b49813f8482/saa7134/saa7134-input.c 2009-09-03 12:06:34.000000000
+0200
+++ video/saa7134/saa7134-input.c 2009-09-07 00:51:46.000000000 +0200
@@ -742,7 +808,7 @@ void saa7134_probe_i2c_ir(struct saa7134
{
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 30)
struct i2c_board_info info;
- struct IR_i2c_init_data init_data;
+ struct IR_i2c_init_data *init_data;
const unsigned short addr_list[] = {
0x7a, 0x47, 0x71, 0x2d,
I2C_CLIENT_END
@@ -770,7 +836,8 @@ void saa7134_probe_i2c_ir(struct saa7134
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 30)
memset(&info, 0, sizeof(struct i2c_board_info));
- memset(&init_data, 0, sizeof(struct IR_i2c_init_data));
+ init_data = kzalloc(sizeof(struct IR_i2c_init_data), GFP_KERNEL);
strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
#endif
@@ -780,15 +847,15 @@ void saa7134_probe_i2c_ir(struct saa7134
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 30)
snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
#else
- init_data.name = "Pinnacle PCTV";
+ init_data->name = "Pinnacle PCTV";
#endif
if (pinnacle_remote == 0) {
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 30)
ir->get_key = get_key_pinnacle_color;
ir->ir_codes = &ir_codes_pinnacle_color_table;
#else
- init_data.get_key = get_key_pinnacle_color;
- init_data.ir_codes = &ir_codes_pinnacle_color_table;
+ init_data->get_key = get_key_pinnacle_color;
+ init_data->ir_codes = &ir_codes_pinnacle_color_table;
info.addr = 0x47;
#endif
} else {
@@ -796,8 +863,8 @@ void saa7134_probe_i2c_ir(struct saa7134
ir->get_key = get_key_pinnacle_grey;
ir->ir_codes = &ir_codes_pinnacle_grey_table;
#else
- init_data.get_key = get_key_pinnacle_grey;
- init_data.ir_codes = &ir_codes_pinnacle_grey_table;
+ init_data->get_key = get_key_pinnacle_grey;
+ init_data->ir_codes = &ir_codes_pinnacle_grey_table;
info.addr = 0x47;
#endif
}
@@ -808,9 +875,9 @@ void saa7134_probe_i2c_ir(struct saa7134
ir->get_key = get_key_purpletv;
ir->ir_codes = &ir_codes_purpletv_table;
#else
- init_data.name = "Purple TV";
- init_data.get_key = get_key_purpletv;
- init_data.ir_codes = &ir_codes_purpletv_table;
+ init_data->name = "Purple TV";
+ init_data->get_key = get_key_purpletv;
+ init_data->ir_codes = &ir_codes_purpletv_table;
#endif
break;
case SAA7134_BOARD_MSI_TVATANYWHERE_PLUS:
@@ -819,9 +886,9 @@ void saa7134_probe_i2c_ir(struct saa7134
ir->get_key = get_key_msi_tvanywhere_plus;
ir->ir_codes = &ir_codes_msi_tvanywhere_plus_table;
#else
- init_data.name = "MSI TV@...here Plus";
- init_data.get_key = get_key_msi_tvanywhere_plus;
- init_data.ir_codes = &ir_codes_msi_tvanywhere_plus_table;
+ init_data->name = "MSI TV@...here Plus";
+ init_data->get_key = get_key_msi_tvanywhere_plus;
+ init_data->ir_codes = &ir_codes_msi_tvanywhere_plus_table;
info.addr = 0x30;
/* MSI TV@...here Plus controller doesn't seem to
respond to probes unless we read something from
@@ -839,9 +906,9 @@ void saa7134_probe_i2c_ir(struct saa7134
ir->get_key = get_key_hvr1110;
ir->ir_codes = &ir_codes_hauppauge_new_table;
#else
- init_data.name = "HVR 1110";
- init_data.get_key = get_key_hvr1110;
- init_data.ir_codes = &ir_codes_hauppauge_new_table;
+ init_data->name = "HVR 1110";
+ init_data->get_key = get_key_hvr1110;
+ init_data->ir_codes = &ir_codes_hauppauge_new_table;
#endif
break;
case SAA7134_BOARD_BEHOLD_607FM_MK3:
@@ -862,9 +929,21 @@ void saa7134_probe_i2c_ir(struct saa7134
ir->get_key = get_key_beholdm6xx;
ir->ir_codes = &ir_codes_behold_table;
#else
- init_data.name = "BeholdTV";
- init_data.get_key = get_key_beholdm6xx;
- init_data.ir_codes = &ir_codes_behold_table;
+ init_data->name = "BeholdTV";
+ init_data->get_key = get_key_beholdm6xx;
+ init_data->ir_codes = &ir_codes_behold_table;
#endif
break;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 30)
@@ -879,8 +958,9 @@ void saa7134_probe_i2c_ir(struct saa7134
}
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 30)
- if (init_data.name)
- info.platform_data = &init_data;
+ if (init_data->name)
+ info.platform_data = init_data;
/* No need to probe if address is known */
if (info.addr) {
i2c_new_device(&dev->i2c_adap, &info);
--
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