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| author | John Garry <john.garry@huawei.com> | 2022-06-29 17:18:44 +0800 |
|---|---|---|
| committer | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-06-30 08:21:43 +0900 |
| commit | 32788beb103f7f71e0192dce701f387070914651 (patch) | |
| tree | 30196eac18391806d818e508ccaf80857de85544 /drivers | |
| parent | 540a92bfe6dab7310b9df2e488ba247d784d0163 (diff) | |
| download | linux-32788beb103f7f71e0192dce701f387070914651.tar.bz2 | |
ata: pata_cs5535: Fix W=1 warnings
x86_64 allmodconfig build with W=1 gives these warnings:
drivers/ata/pata_cs5535.c: In function ‘cs5535_set_piomode’:
drivers/ata/pata_cs5535.c:93:11: error: variable ‘dummy’ set but not
used [-Werror=unused-but-set-variable]
u32 reg, dummy;
^~~~~
drivers/ata/pata_cs5535.c: In function ‘cs5535_set_dmamode’:
drivers/ata/pata_cs5535.c:132:11: error: variable ‘dummy’ set but not
used [-Werror=unused-but-set-variable]
u32 reg, dummy;
^~~~~
cc1: all warnings being treated as errors
Mark variables 'dummy' as "maybe unused" as they are only ever written
in rdmsr() calls.
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/pata_cs5535.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/ata/pata_cs5535.c b/drivers/ata/pata_cs5535.c index 6725931f3c35..c2c3238ff84b 100644 --- a/drivers/ata/pata_cs5535.c +++ b/drivers/ata/pata_cs5535.c @@ -90,7 +90,7 @@ static void cs5535_set_piomode(struct ata_port *ap, struct ata_device *adev) static const u16 pio_cmd_timings[5] = { 0xF7F4, 0x53F3, 0x13F1, 0x5131, 0x1131 }; - u32 reg, dummy; + u32 reg, __maybe_unused dummy; struct ata_device *pair = ata_dev_pair(adev); int mode = adev->pio_mode - XFER_PIO_0; @@ -129,7 +129,7 @@ static void cs5535_set_dmamode(struct ata_port *ap, struct ata_device *adev) static const u32 mwdma_timings[3] = { 0x7F0FFFF3, 0x7F035352, 0x7F024241 }; - u32 reg, dummy; + u32 reg, __maybe_unused dummy; int mode = adev->dma_mode; rdmsr(ATAC_CH0D0_DMA + 2 * adev->devno, reg, dummy); |