From: Jerome Pouiller <Jerome.Pouiller@silabs.com>
To: devel@driverdev.osuosl.org, linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Kalle Valo" <kvalo@codeaurora.org>,
"David S . Miller" <davem@davemloft.net>,
"Jérôme Pouiller" <jerome.pouiller@silabs.com>,
"kernel test robot" <lkp@intel.com>,
"Nathan Chancellor" <natechancellor@gmail.com>
Subject: [PATCH 1/2] staging: wfx: fix use of uninitialized pointer
Date: Mon, 19 Oct 2020 18:06:03 +0200 [thread overview]
Message-ID: <20201019160604.1609180-1-Jerome.Pouiller@silabs.com> (raw)
From: Jérôme Pouiller <jerome.pouiller@silabs.com>
With -Wuninitialized, the compiler complains:
drivers/staging/wfx/data_tx.c:34:19: warning: variable 'band' is uninitialized when used here [-Wuninitialized]
if (rate->idx >= band->n_bitrates) {
^~~~
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Fixes: 868fd970e187 ("staging: wfx: improve robustness of wfx_get_hw_rate()")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
drivers/staging/wfx/data_tx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
index 41f6a604a697..36b36ef39d05 100644
--- a/drivers/staging/wfx/data_tx.c
+++ b/drivers/staging/wfx/data_tx.c
@@ -31,13 +31,13 @@ static int wfx_get_hw_rate(struct wfx_dev *wdev,
}
return rate->idx + 14;
}
- if (rate->idx >= band->n_bitrates) {
- WARN(1, "wrong rate->idx value: %d", rate->idx);
- return -1;
- }
// WFx only support 2GHz, else band information should be retrieved
// from ieee80211_tx_info
band = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
+ if (rate->idx >= band->n_bitrates) {
+ WARN(1, "wrong rate->idx value: %d", rate->idx);
+ return -1;
+ }
return band->bitrates[rate->idx].hw_value;
}
--
2.28.0
WARNING: multiple messages have this Message-ID (diff)
From: Jerome Pouiller <Jerome.Pouiller@silabs.com>
To: devel@driverdev.osuosl.org, linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Nathan Chancellor <natechancellor@gmail.com>,
"David S . Miller" <davem@davemloft.net>,
Kalle Valo <kvalo@codeaurora.org>
Subject: [PATCH 1/2] staging: wfx: fix use of uninitialized pointer
Date: Mon, 19 Oct 2020 18:06:03 +0200 [thread overview]
Message-ID: <20201019160604.1609180-1-Jerome.Pouiller@silabs.com> (raw)
From: Jérôme Pouiller <jerome.pouiller@silabs.com>
With -Wuninitialized, the compiler complains:
drivers/staging/wfx/data_tx.c:34:19: warning: variable 'band' is uninitialized when used here [-Wuninitialized]
if (rate->idx >= band->n_bitrates) {
^~~~
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Fixes: 868fd970e187 ("staging: wfx: improve robustness of wfx_get_hw_rate()")
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
---
drivers/staging/wfx/data_tx.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/wfx/data_tx.c b/drivers/staging/wfx/data_tx.c
index 41f6a604a697..36b36ef39d05 100644
--- a/drivers/staging/wfx/data_tx.c
+++ b/drivers/staging/wfx/data_tx.c
@@ -31,13 +31,13 @@ static int wfx_get_hw_rate(struct wfx_dev *wdev,
}
return rate->idx + 14;
}
- if (rate->idx >= band->n_bitrates) {
- WARN(1, "wrong rate->idx value: %d", rate->idx);
- return -1;
- }
// WFx only support 2GHz, else band information should be retrieved
// from ieee80211_tx_info
band = wdev->hw->wiphy->bands[NL80211_BAND_2GHZ];
+ if (rate->idx >= band->n_bitrates) {
+ WARN(1, "wrong rate->idx value: %d", rate->idx);
+ return -1;
+ }
return band->bitrates[rate->idx].hw_value;
}
--
2.28.0
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next reply other threads:[~2020-10-19 16:06 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-19 16:06 Jerome Pouiller [this message]
2020-10-19 16:06 ` [PATCH 1/2] staging: wfx: fix use of uninitialized pointer Jerome Pouiller
2020-10-19 16:06 ` [PATCH 2/2] staging: wfx: fix test on return value of gpiod_get_value() Jerome Pouiller
2020-10-19 16:06 ` Jerome Pouiller
2020-10-20 1:07 ` [PATCH 1/2] staging: wfx: fix use of uninitialized pointer Nathan Chancellor
2020-10-20 1:07 ` Nathan Chancellor
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