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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-05-15 01:42:03 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-15 05:52:48 +0300
commit2127982895d4e1d5343b5fdb986dd3b17b4fe43f (patch)
treeee027284a909032b4ecb9ea00694cf3dab7f8345 /drivers/mtd
parente60fb8bf68d40ec32f8ea34950623ea570c9090e (diff)
downloadlinux-2127982895d4e1d5343b5fdb986dd3b17b4fe43f.tar.xz
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@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Boris Brezillon <bbrezillon@kernel.org> Cc: Borislav Petkov <bp@suse.de> Cc: Brian Norris <computersforpeace@gmail.com> Cc: Christophe Leroy <christophe.leroy@c-s.fr> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Marek Vasut <marek.vasut@gmail.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Malaterre <malat@debian.org> Cc: Miquel Raynal <miquel.raynal@bootlin.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Richard Weinberger <richard@nod.at> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Stefan Agner <stefan@agner.ch> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/raw/vf610_nfc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/nand/raw/vf610_nfc.c b/drivers/mtd/nand/raw/vf610_nfc.c
index 6d43ddb3332f..e4fe8c4bc711 100644
--- a/drivers/mtd/nand/raw/vf610_nfc.c
+++ b/drivers/mtd/nand/raw/vf610_nfc.c
@@ -364,7 +364,7 @@ static int vf610_nfc_cmd(struct nand_chip *chip,
{
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;