Thread (10 messages) 10 messages, 4 authors, 4d ago

[PATCH 1/2] spi: aspeed: Fix missing __iomem annotation in output transfer path

From: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Date: 2026-05-18 09:57:18
Also in: linux-arm-kernel, linux-spi, lkml, openbmc
Subsystem: aspeed smc spi driver, spi subsystem, the rest · Maintainers: Chin-Ting Kuo, Cédric Le Goater, Mark Brown, Linus Torvalds

The dst parameter of aspeed_spi_user_transfer_tx() is an MMIO address
obtained from chip->ahb_base, but it was typed as void * instead of
void __iomem *.  This caused a sparse warning report. Fix the
parameter type to void __iomem * and drop the now-unnecessary
cast at the call site.

Reported-by: kernel test robot <redacted>
Closes: https://lore.kernel.org/oe-kbuild-all/202605180441.uD3toFRJ-lkp@intel.com/ (local)
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
---
 drivers/spi/spi-aspeed-smc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/spi/spi-aspeed-smc.c b/drivers/spi/spi-aspeed-smc.c
index c21323e07d3c..808659a1f460 100644
--- a/drivers/spi/spi-aspeed-smc.c
+++ b/drivers/spi/spi-aspeed-smc.c
@@ -891,7 +891,7 @@ static int aspeed_spi_user_unprepare_msg(struct spi_controller *ctlr,
 static void aspeed_spi_user_transfer_tx(struct aspeed_spi *aspi,
 					struct spi_device *spi,
 					const u8 *tx_buf, u8 *rx_buf,
-					void *dst, u32 len)
+					void __iomem *dst, u32 len)
 {
 	const struct aspeed_spi_data *data = aspi->data;
 	bool full_duplex_transfer = data->full_duplex && tx_buf == rx_buf;
@@ -936,7 +936,7 @@ static int aspeed_spi_user_transfer(struct spi_controller *ctlr,
 			aspeed_spi_set_io_mode(chip, CTRL_IO_QUAD_DATA);
 
 		aspeed_spi_user_transfer_tx(aspi, spi, tx_buf, rx_buf,
-					    (void *)ahb_base, xfer->len);
+					    ahb_base, xfer->len);
 	}
 
 	if (rx_buf && rx_buf != tx_buf) {
-- 
2.34.1

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