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| author | Binbin Zhou <zhoubinbin@loongson.cn> | 2024-12-30 09:39:19 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-01-02 10:34:21 +0100 |
| commit | 908dd70d54463eec26660e91aaff0891cad11c6e (patch) | |
| tree | 1a9afdda383da60fe5c92a31de53764c879569ce /drivers/dma | |
| parent | 79a47fd0f1766064d85c0cea80ca98166087705f (diff) | |
| download | linux-908dd70d54463eec26660e91aaff0891cad11c6e.tar.gz linux-908dd70d54463eec26660e91aaff0891cad11c6e.tar.bz2 linux-908dd70d54463eec26660e91aaff0891cad11c6e.zip | |
dmaengine: loongson2-apb: Change GENMASK to GENMASK_ULL
[ Upstream commit 4b65d5322e1d8994acfdb9b867aa00bdb30d177b ]
Fix the following smatch static checker warning:
drivers/dma/loongson2-apb-dma.c:189 ls2x_dma_write_cmd()
warn: was expecting a 64 bit value instead of '~(((0)) + (((~((0))) - (((1)) << (0)) + 1) & (~((0)) >> ((8 * 4) - 1 - (4)))))'
The GENMASK macro used "unsigned long", which caused build issues when
using a 32-bit toolchain because it would try to access bits > 31. This
patch switches GENMASK to GENMASK_ULL, which uses "unsigned long long".
Fixes: 71e7d3cb6e55 ("dmaengine: ls2x-apb: New driver for the Loongson LS2X APB DMA controller")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/87cdc025-7246-4548-85ca-3d36fdc2be2d@stanley.mountain/
Signed-off-by: Binbin Zhou <zhoubinbin@loongson.cn>
Link: https://lore.kernel.org/r/20241028093413.1145820-1-zhoubinbin@loongson.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/ls2x-apb-dma.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/ls2x-apb-dma.c b/drivers/dma/ls2x-apb-dma.c index 9652e8666722..b4f18be62945 100644 --- a/drivers/dma/ls2x-apb-dma.c +++ b/drivers/dma/ls2x-apb-dma.c @@ -31,7 +31,7 @@ #define LDMA_ASK_VALID BIT(2) #define LDMA_START BIT(3) /* DMA start operation */ #define LDMA_STOP BIT(4) /* DMA stop operation */ -#define LDMA_CONFIG_MASK GENMASK(4, 0) /* DMA controller config bits mask */ +#define LDMA_CONFIG_MASK GENMASK_ULL(4, 0) /* DMA controller config bits mask */ /* Bitfields in ndesc_addr field of HW descriptor */ #define LDMA_DESC_EN BIT(0) /*1: The next descriptor is valid */ |