Thread (4 messages) 4 messages, 4 authors, 2026-02-25

Re: [Linux-stm32] [PATCH] spi: stm32: Use NULL instead of 0 for pointer

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From: Amelie Delaunay <amelie.delaunay@foss.st.com>
Date: 2026-02-17 09:12:06
Also in: linux-spi, lkml

On 2/16/26 09:58, Krzysztof Kozlowski wrote:
Pointers should use NULL instead of explicit '0', as pointed out by
sparse:

   spi-stm32.c:1659:65: warning: Using plain integer as NULL pointer

Signed-off-by: Krzysztof Kozlowski <redacted>

Reviewed-by: Amelie Delaunay <amelie.delaunay@foss.st.com>

Thank you for providing the patch to fix this warning.

Regards,
Amelie
quoted hunk ↗ jump to hunk
---
  drivers/spi/spi-stm32.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/spi/spi-stm32.c b/drivers/spi/spi-stm32.c
index b99de8c4cc99..38f6bba38b07 100644
--- a/drivers/spi/spi-stm32.c
+++ b/drivers/spi/spi-stm32.c
@@ -1656,7 +1656,7 @@ static int stm32_spi_transfer_one_dma(struct stm32_spi *spi,
  			ret = stm32_spi_prepare_rx_dma_mdma_chaining(spi, xfer, &rx_dma_conf,
  								     &rx_dma_desc, &rx_mdma_desc);
  			if (ret) { /* RX DMA MDMA chaining not possible, fallback to DMA only */
-				rx_dma_conf.peripheral_config = 0;
+				rx_dma_conf.peripheral_config = NULL;
  				rx_dma_desc = NULL;
  			}
  		}
  
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