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authorDavid Mosberger-Tang <davidm@egauge.net>2021-12-07 03:26:01 +0300
committerKalle Valo <kvalo@kernel.org>2021-12-14 21:43:47 +0300
commitdde02213fa64ac7f99eb65cd51f9e04812d8bc40 (patch)
tree2e21c41e6493f78e7589f0174f278f9049e04f7a /drivers/net/wireless/microchip
parent5ae660641db824ecc9c7a49546dff701c6dc7ca7 (diff)
downloadlinux-dde02213fa64ac7f99eb65cd51f9e04812d8bc40.tar.xz
wilc1000: Remove misleading USE_SPI_DMA macro
The USE_SPI_DMA macro name suggests that it could be set to 1 to control whether or not SPI DMA should be used. However, that's not what it does. If set to 1, it'll set the SPI messages' "is_dma_mapped" flag to true, even though the tx/rx buffers aren't actually DMA mapped by the driver. In other words, setting this flag to 1 will break the driver. Best to clean up this confusion by removing the macro altogether. There is no need to explicitly initialize "is_dma_mapped" because the message is cleared to zero anyhow, so "is_dma_mapped" is set to false by default. Signed-off-by: David Mosberger-Tang <davidm@egauge.net> Acked-by: Ajay Singh <ajay.kathat@microchip.com> Signed-off-by: Kalle Valo <kvalo@kernel.org> Link: https://lore.kernel.org/r/20211207002453.3193737-1-davidm@egauge.net
Diffstat (limited to 'drivers/net/wireless/microchip')
-rw-r--r--drivers/net/wireless/microchip/wilc1000/spi.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 6e7fd18c14e7..fc02217d6924 100644
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c
@@ -99,8 +99,6 @@ static int wilc_spi_reset(struct wilc *wilc);
#define DATA_PKT_LOG_SZ DATA_PKT_LOG_SZ_MAX
#define DATA_PKT_SZ (1 << DATA_PKT_LOG_SZ)
-#define USE_SPI_DMA 0
-
#define WILC_SPI_COMMAND_STAT_SUCCESS 0
#define WILC_GET_RESP_HDR_START(h) (((h) >> 4) & 0xf)
@@ -247,7 +245,6 @@ static int wilc_spi_tx(struct wilc *wilc, u8 *b, u32 len)
memset(&msg, 0, sizeof(msg));
spi_message_init(&msg);
msg.spi = spi;
- msg.is_dma_mapped = USE_SPI_DMA;
spi_message_add_tail(&tr, &msg);
ret = spi_sync(spi, &msg);
@@ -291,7 +288,6 @@ static int wilc_spi_rx(struct wilc *wilc, u8 *rb, u32 rlen)
memset(&msg, 0, sizeof(msg));
spi_message_init(&msg);
msg.spi = spi;
- msg.is_dma_mapped = USE_SPI_DMA;
spi_message_add_tail(&tr, &msg);
ret = spi_sync(spi, &msg);
@@ -330,7 +326,6 @@ static int wilc_spi_tx_rx(struct wilc *wilc, u8 *wb, u8 *rb, u32 rlen)
memset(&msg, 0, sizeof(msg));
spi_message_init(&msg);
msg.spi = spi;
- msg.is_dma_mapped = USE_SPI_DMA;
spi_message_add_tail(&tr, &msg);
ret = spi_sync(spi, &msg);