[PATCH] fix handling of wait_for_completion_timeout result
From: Nicholas Mc Guire
Date: Sat Dec 27 2014 - 06:53:12 EST
wati_for_completion_timeout does not return negative values so
"result" handlin here should be simplified to cover the actually
possible cases only.
patch was only compile tested for imx_v6_v7_defconfig
patch is against 3.19.0-rc1 -next-20141226
Signed-off-by: Nicholas Mc Guire <der.herr@xxxxxxx>
---
drivers/i2c/busses/i2c-imx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 7f3a9fe..2be7d9d 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -628,9 +628,9 @@ static int i2c_imx_dma_write(struct imx_i2c_struct *i2c_imx,
result = wait_for_completion_timeout(
&i2c_imx->dma->cmd_complete,
msecs_to_jiffies(DMA_TIMEOUT));
- if (result <= 0) {
+ if (result == 0) {
dmaengine_terminate_all(dma->chan_using);
- return result ?: -ETIMEDOUT;
+ return -ETIMEDOUT;
}
/* Waiting for transfer complete. */
@@ -686,9 +686,9 @@ static int i2c_imx_dma_read(struct imx_i2c_struct *i2c_imx,
result = wait_for_completion_timeout(
&i2c_imx->dma->cmd_complete,
msecs_to_jiffies(DMA_TIMEOUT));
- if (result <= 0) {
+ if (result == 0) {
dmaengine_terminate_all(dma->chan_using);
- return result ?: -ETIMEDOUT;
+ return -ETIMEDOUT;
}
/* waiting for transfer complete. */
--
1.7.10.4
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