diff options
| author | Nathan Chancellor <natechancellor@gmail.com> | 2019-05-23 08:30:08 -0700 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-05-28 14:31:36 +0300 |
| commit | f57b5d85ed5865f0cd0a6dc4726c995b9e57e28a (patch) | |
| tree | ee630720ca9d63b14a4ee6d495bc54bdf830c54f /drivers/net/wireless/rsi/rsi_91x_sdio.c | |
| parent | a24bad74737f4c8814e0669d38dba5f2ddb86514 (diff) | |
rsi: Properly initialize data in rsi_sdio_ta_reset
When building with -Wuninitialized, Clang warns:
drivers/net/wireless/rsi/rsi_91x_sdio.c:940:43: warning: variable 'data'
is uninitialized when used here [-Wuninitialized]
put_unaligned_le32(TA_HOLD_THREAD_VALUE, data);
^~~~
drivers/net/wireless/rsi/rsi_91x_sdio.c:930:10: note: initialize the
variable 'data' to silence this warning
u8 *data;
^
= NULL
1 warning generated.
Using Clang's suggestion of initializing data to NULL wouldn't work out
because data will be dereferenced by put_unaligned_le32. Use kzalloc to
properly initialize data, which matches a couple of other places in this
driver.
Fixes: e5a1ecc97e5f ("rsi: add firmware loading for 9116 device")
Link: https://github.com/ClangBuiltLinux/linux/issues/464
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/rsi/rsi_91x_sdio.c')
| -rw-r--r-- | drivers/net/wireless/rsi/rsi_91x_sdio.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/drivers/net/wireless/rsi/rsi_91x_sdio.c b/drivers/net/wireless/rsi/rsi_91x_sdio.c index f9c67ed473d1..b42cd50b837e 100644 --- a/drivers/net/wireless/rsi/rsi_91x_sdio.c +++ b/drivers/net/wireless/rsi/rsi_91x_sdio.c @@ -929,11 +929,15 @@ static int rsi_sdio_ta_reset(struct rsi_hw *adapter) u32 addr; u8 *data; + data = kzalloc(RSI_9116_REG_SIZE, GFP_KERNEL); + if (!data) + return -ENOMEM; + status = rsi_sdio_master_access_msword(adapter, TA_BASE_ADDR); if (status < 0) { rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n"); - return status; + goto err; } rsi_dbg(INIT_ZONE, "%s: Bring TA out of reset\n", __func__); @@ -944,7 +948,7 @@ static int rsi_sdio_ta_reset(struct rsi_hw *adapter) RSI_9116_REG_SIZE); if (status < 0) { rsi_dbg(ERR_ZONE, "Unable to hold TA threads\n"); - return status; + goto err; } put_unaligned_le32(TA_SOFT_RST_CLR, data); @@ -954,7 +958,7 @@ static int rsi_sdio_ta_reset(struct rsi_hw *adapter) RSI_9116_REG_SIZE); if (status < 0) { rsi_dbg(ERR_ZONE, "Unable to get TA out of reset\n"); - return status; + goto err; } put_unaligned_le32(TA_PC_ZERO, data); @@ -964,7 +968,8 @@ static int rsi_sdio_ta_reset(struct rsi_hw *adapter) RSI_9116_REG_SIZE); if (status < 0) { rsi_dbg(ERR_ZONE, "Unable to Reset TA PC value\n"); - return -EINVAL; + status = -EINVAL; + goto err; } put_unaligned_le32(TA_RELEASE_THREAD_VALUE, data); @@ -974,17 +979,19 @@ static int rsi_sdio_ta_reset(struct rsi_hw *adapter) RSI_9116_REG_SIZE); if (status < 0) { rsi_dbg(ERR_ZONE, "Unable to release TA threads\n"); - return status; + goto err; } status = rsi_sdio_master_access_msword(adapter, MISC_CFG_BASE_ADDR); if (status < 0) { rsi_dbg(ERR_ZONE, "Unable to set ms word to common reg\n"); - return status; + goto err; } rsi_dbg(INIT_ZONE, "***** TA Reset done *****\n"); - return 0; +err: + kfree(data); + return status; } static struct rsi_host_intf_ops sdio_host_intf_ops = { |