[PATCH 3.16 089/178] IB/qib: fix false-postive maybe-uninitialized warning
From: Ben Hutchings <hidden>
Date: 2017-07-16 14:03:40
Also in:
lkml
3.16.46-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Arnd Bergmann <arnd@arndb.de>
commit f6aafac184a3e46e919769dd4faa8bf0dc436534 upstream.
aarch64-linux-gcc-7 complains about code it doesn't fully understand:
drivers/infiniband/hw/qib/qib_iba7322.c: In function 'qib_7322_txchk_change':
include/asm-generic/bitops/non-atomic.h:105:35: error: 'shadow' may be used uninitialized in this function [-Werror=maybe-uninitialized]
The code is right, and despite trying hard, I could not come up with a version
that I liked better than just adding a fake initialization here to shut up the
warning.
Fixes: f931551bafe1 ("IB/qib: Add new qib driver for QLogic PCIe InfiniBand adapters")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <redacted>
Signed-off-by: Ben Hutchings <redacted>
---
drivers/infiniband/hw/qib/qib_iba7322.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c@@ -7078,7 +7078,7 @@ static void qib_7322_txchk_change(struct unsigned long flags; while (wait) { - unsigned long shadow; + unsigned long shadow = 0; int cstart, previ = -1; /*