The patch titled
Subject: mtd: rawnand: vf610_nfc: add initializer to avoid -Wmaybe-uninitialized
has been added to the -mm tree. Its filename is
mtd-rawnand-vf610_nfc-add-initializer-to-avoid-wmaybe-uninitialized.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mtd-rawnand-vf610_nfc-add-initializer-to-avoid-wmaybe-uninitialized.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mtd-rawnand-vf610_nfc-add-initializer-to-avoid-wmaybe-uninitialized.patch
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------------------------------------------------------
From: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Subject: mtd: rawnand: vf610_nfc: add initializer to avoid -Wmaybe-uninitialized
This prepares to move CONFIG_OPTIMIZE_INLINING from x86 to a common place.
We need to eliminate potential issues beforehand.
Kbuild test robot has never reported -Wmaybe-uninitialized warning for
this probably because vf610_nfc_run() is inlined by the x86 compiler's
inlining heuristic.
If CONFIG_OPTIMIZE_INLINING is enabled for a different architecture and
vf610_nfc_run() is not inlined, the following warning is reported:
drivers/mtd/nand/raw/vf610_nfc.c: In function `vf610_nfc_cmd':
drivers/mtd/nand/raw/vf610_nfc.c:455:3: warning: `offset' may be used uninitialized in this function [-Wmaybe-uninitialized]
vf610_nfc_rd_from_sram(instr->ctx.data.buf.in + offset,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nfc->regs + NFC_MAIN_AREA(0) + offset,
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
trfr_sz, !nfc->data_access);
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Link: http://lkml.kernel.org/r/20190423034959.13525-6-yamada.masahiro@xxxxxxxxxxxxx
Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/mtd/nand/raw/vf610_nfc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/mtd/nand/raw/vf610_nfc.c~mtd-rawnand-vf610_nfc-add-initializer-to-avoid-wmaybe-uninitialized
+++ a/drivers/mtd/nand/raw/vf610_nfc.c
@@ -364,7 +364,7 @@ static int vf610_nfc_cmd(struct nand_chi
{
const struct nand_op_instr *instr;
struct vf610_nfc *nfc = chip_to_nfc(chip);
- int op_id = -1, trfr_sz = 0, offset;
+ int op_id = -1, trfr_sz = 0, offset = 0;
u32 col = 0, row = 0, cmd1 = 0, cmd2 = 0, code = 0;
bool force8bit = false;
_
Patches currently in -mm which might be from yamada.masahiro@xxxxxxxxxxxxx are
remove-spdx-with-linux-syscall-note-from-kernel-space-headers.patch
arm64-mark-__cpus_have_const_cap-as-__always_inline.patch
mips-mark-mult_sh_align_mod-as-__always_inline.patch
s390-cpacf-mark-scpacf_query-as-__always_inline.patch
mtd-rawnand-vf610_nfc-add-initializer-to-avoid-wmaybe-uninitialized.patch
mips-mark-__fls-and-__ffs-as-__always_inline.patch
arm-mark-setup_machine_tags-stub-as-__init-__noreturn.patch
powerpc-prom_init-mark-prom_getprop-and-prom_getproplen-as-__init.patch
powerpc-mm-radix-mark-__radix__flush_tlb_range_psize-as-__always_inline.patch
powerpc-mm-radix-mark-as-__tlbie_pid-and-friends-as__always_inline.patch
compiler-allow-all-arches-to-enable-config_optimize_inlining.patch
treewide-replace-include-asm-sizesh-with-include-linux-sizesh.patch
arch-remove-asm-sizesh-amd-asm-generic-sizesh.patch
