Messages in this thread Patch in this message | | | From | Alexander Lobakin <> | Subject | [PATCH net 9/9] net: qed: fix "maybe uninitialized" warning | Date | Mon, 22 Jun 2020 14:14:13 +0300 |
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Variable 'abs_ppfid' in qed_dev.c:qed_llh_add_mac_filter() always gets printed, but is initialized only under 'ref_cnt == 1' condition. This results in:
In file included from ./include/linux/kernel.h:15:0, from ./include/asm-generic/bug.h:19, from ./arch/x86/include/asm/bug.h:86, from ./include/linux/bug.h:5, from ./include/linux/io.h:11, from drivers/net/ethernet/qlogic/qed/qed_dev.c:35: drivers/net/ethernet/qlogic/qed/qed_dev.c: In function 'qed_llh_add_mac_filter': ./include/linux/printk.h:358:2: warning: 'abs_ppfid' may be used uninitialized in this function [-Wmaybe-uninitialized] printk(KERN_NOTICE pr_fmt(fmt), ##__VA_ARGS__) ^~~~~~ drivers/net/ethernet/qlogic/qed/qed_dev.c:983:17: note: 'abs_ppfid' was declared here u8 filter_idx, abs_ppfid; ^~~~~~~~~
...under W=1+.
Fix this by initializing it with zero.
Fixes: 79284adeb99e ("qed: Add llh ppfid interface and 100g support for offload protocols") Signed-off-by: Alexander Lobakin <alobakin@marvell.com> Signed-off-by: Igor Russkikh <irusskikh@marvell.com> Signed-off-by: Michal Kalderon <michal.kalderon@marvell.com> --- drivers/net/ethernet/qlogic/qed/qed_dev.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/qlogic/qed/qed_dev.c b/drivers/net/ethernet/qlogic/qed/qed_dev.c index b41ada668948..3aa51374e727 100644 --- a/drivers/net/ethernet/qlogic/qed/qed_dev.c +++ b/drivers/net/ethernet/qlogic/qed/qed_dev.c @@ -980,7 +980,7 @@ int qed_llh_add_mac_filter(struct qed_dev *cdev, struct qed_hwfn *p_hwfn = QED_LEADING_HWFN(cdev); struct qed_ptt *p_ptt = qed_ptt_acquire(p_hwfn); union qed_llh_filter filter = {}; - u8 filter_idx, abs_ppfid; + u8 filter_idx, abs_ppfid = 0; u32 high, low, ref_cnt; int rc = 0; -- 2.21.0
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