From 5fdca4a995bcd4cf61bda40af154a730589dc524 Mon Sep 17 00:00:00 2001 From: Serge Semin Date: Wed, 25 Jan 2023 18:19:00 +0300 Subject: dmaengine: dw-edma: Fix readq_ch() return value truncation 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: 04e0a39fc10f ("dmaengine: dw-edma: Add writeq() and readq() for 64 bits architectures") Signed-off-by: Serge Semin Signed-off-by: Bjorn Helgaas --- drivers/dma/dw-edma/dw-edma-v0-core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/dma') diff --git a/drivers/dma/dw-edma/dw-edma-v0-core.c b/drivers/dma/dw-edma/dw-edma-v0-core.c index 66f296daac5a..13f40560571b 100644 --- a/drivers/dma/dw-edma/dw-edma-v0-core.c +++ b/drivers/dma/dw-edma/dw-edma-v0-core.c @@ -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; -- cgit v1.2.3