[alsa-devel] [PATCH 01/11] ASoC: Fix DaVinci module unload error

[Mark Brown]

From: Kevin Hilman <khilman at deeprootsystems.com>

Fix for the error when the audio module is unloaded.  On unregistering
the platform_device, platform_device_release will free the platform
data.If platform data is static the kernel panics when it is freed.
Instead use the platform device helper function to add data.

This change has been tested on DM644x EVM, DM644x SFFSDR and DM355 EVM.

Signed-off-by: Chaithrika U S <chaithrika at ti.com>
Signed-off-by: Kevin Hilman <khilman at deeprootsystems.com>
Signed-off-by: Mark Brown <broonie at opensource.wolfsonmicro.com>
---
 sound/soc/davinci/davinci-evm.c    |    3 ++-
 sound/soc/davinci/davinci-sffsdr.c |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/sound/soc/davinci/davinci-evm.c b/sound/soc/davinci/davinci-evm.c
index 54851f3..9b90b34 100644
--- a/sound/soc/davinci/davinci-evm.c
+++ b/sound/soc/davinci/davinci-evm.c
@@ -186,7 +186,8 @@ static int __init evm_init(void)
 
 	platform_set_drvdata(evm_snd_device, &evm_snd_devdata);
 	evm_snd_devdata.dev = &evm_snd_device->dev;
-	evm_snd_device->dev.platform_data = &evm_snd_data;
+	platform_device_add_data(evm_snd_device, &evm_snd_data,
+				 sizeof(evm_snd_data));
 
 	ret = platform_device_add_resources(evm_snd_device, evm_snd_resources,
 					    ARRAY_SIZE(evm_snd_resources));
diff --git a/sound/soc/davinci/davinci-sffsdr.c b/sound/soc/davinci/davinci-sffsdr.c
index 50baef1..0bf81ab 100644
--- a/sound/soc/davinci/davinci-sffsdr.c
+++ b/sound/soc/davinci/davinci-sffsdr.c
@@ -141,7 +141,8 @@ static int __init sffsdr_init(void)
 
 	platform_set_drvdata(sffsdr_snd_device, &sffsdr_snd_devdata);
 	sffsdr_snd_devdata.dev = &sffsdr_snd_device->dev;
-	sffsdr_snd_device->dev.platform_data = &sffsdr_snd_data;
+	platform_device_add_data(sffsdr_snd_device, &sffsdr_snd_data,
+				 sizeof(sffsdr_snd_data));
 
 	ret = platform_device_add_resources(sffsdr_snd_device,
 					    sffsdr_snd_resources,
-- 
1.5.6.3