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authorWei Yongjun <yongjun_wei@trendmicro.com.cn>2013-05-28 11:58:19 +0400
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2013-06-06 09:48:52 +0400
commit64b8dd299a1344626bbcfcbd62f19f1542349ad8 (patch)
tree773cf912d59b5520b22a52cdcc3c79d567370ff5 /drivers/input/touchscreen
parentfc4f314618923c2bef708a535f8483fa7f7dbad2 (diff)
downloadlinux-64b8dd299a1344626bbcfcbd62f19f1542349ad8.tar.xz
Input: atmel_tsadcc - fix error handing with missing platform data
If pdata is NULL, atmel_tsadcc_probe() will release all the resources and return 0, but we need a error code is returned in this case. Fix to return -EINVAL and move the check for pdata to the begin of this function. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/touchscreen')
-rw-r--r--drivers/input/touchscreen/atmel_tsadcc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/input/touchscreen/atmel_tsadcc.c b/drivers/input/touchscreen/atmel_tsadcc.c
index 75a0693a3f91..bddabc595077 100644
--- a/drivers/input/touchscreen/atmel_tsadcc.c
+++ b/drivers/input/touchscreen/atmel_tsadcc.c
@@ -183,10 +183,13 @@ static int atmel_tsadcc_probe(struct platform_device *pdev)
struct input_dev *input_dev;
struct resource *res;
struct at91_tsadcc_data *pdata = pdev->dev.platform_data;
- int err = 0;
+ int err;
unsigned int prsc;
unsigned int reg;
+ if (!pdata)
+ return -EINVAL;
+
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "no mmio resource defined.\n");
@@ -265,9 +268,6 @@ static int atmel_tsadcc_probe(struct platform_device *pdev)
prsc = clk_get_rate(ts_dev->clk);
dev_info(&pdev->dev, "Master clock is set at: %d Hz\n", prsc);
- if (!pdata)
- goto err_fail;
-
if (!pdata->adc_clock)
pdata->adc_clock = ADC_DEFAULT_CLOCK;