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| author | David Mosberger-Tang <davidm@egauge.net> | 2021-12-07 00:26:01 +0000 |
|---|---|---|
| committer | Kalle Valo <kvalo@kernel.org> | 2021-12-14 20:43:47 +0200 |
| commit | dde02213fa64ac7f99eb65cd51f9e04812d8bc40 (patch) | |
| tree | 2e21c41e6493f78e7589f0174f278f9049e04f7a /drivers/net/wireless/microchip/wilc1000/spi.c | |
| parent | 5ae660641db824ecc9c7a49546dff701c6dc7ca7 (diff) | |
| download | linux-stable-dde02213fa64ac7f99eb65cd51f9e04812d8bc40.tar.gz linux-stable-dde02213fa64ac7f99eb65cd51f9e04812d8bc40.tar.bz2 linux-stable-dde02213fa64ac7f99eb65cd51f9e04812d8bc40.zip | |
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/wilc1000/spi.c')
| -rw-r--r-- | drivers/net/wireless/microchip/wilc1000/spi.c | 5 |
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); |