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dmaengine: dw-edma: Fix readq_ch() return value truncation

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[ Upstream commit 5fdca4a995 ]

Previously, readq_ch() did a 64-bit readq(), but truncated the result by
storing it in the u32 "value".  Change "value" to u64 to avoid the
truncation.

Note: the method is currently unused, so the bug hasn't caused any problem
so far.

Fixes: 04e0a39fc1 ("dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures")
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Serge Semin
2023-01-25 18:19:00 +03:00
committed by Greg Kroah-Hartman
parent c8f3a4f90f
commit 126eda513d
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/dw-edma/dw-edma-v0-core.c
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@@ -192,7 +192,7 @@ static inline void writeq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
static inline u64 readq_ch(struct dw_edma *dw, enum dw_edma_dir dir, u16 ch,
const void __iomem *addr)
{
u32 value;
u64 value;
if (dw->chip->mf == EDMA_MF_EDMA_LEGACY) {
u32 viewport_sel;