The patch titled
Blackfin SPI Driver: tweak magic spi dma sequence to get it working on BF54x
has been removed from the -mm tree. Its filename was
blackfin-spi-driver-tweak-magic-spi-dma-sequence-to-get-it-working-on-bf54x.patch
This patch was dropped because it was merged into mainline or a subsystem tree
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
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Subject: Blackfin SPI Driver: tweak magic spi dma sequence to get it working on BF54x
From: Mike Frysinger <vapier.adi@xxxxxxxxx>
Without this change, SPI DMA is not reliably under stress tests.
Obiviously it's a hardware issue which is not addressed by any document.
Signed-off-by: Mike Frysinger <vapier.adi@xxxxxxxxx>
Signed-off-by: Bryan Wu <cooloney@xxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/spi/spi_bfin5xx.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN drivers/spi/spi_bfin5xx.c~blackfin-spi-driver-tweak-magic-spi-dma-sequence-to-get-it-working-on-bf54x drivers/spi/spi_bfin5xx.c
--- a/drivers/spi/spi_bfin5xx.c~blackfin-spi-driver-tweak-magic-spi-dma-sequence-to-get-it-working-on-bf54x
+++ a/drivers/spi/spi_bfin5xx.c
@@ -862,8 +862,9 @@ static void pump_transfers(unsigned long
set_dma_start_addr(drv_data->dma_channel, dma_start_addr);
set_dma_config(drv_data->dma_channel, dma_config);
local_irq_save(flags);
- enable_dma(drv_data->dma_channel);
+ SSYNC();
write_CTRL(drv_data, cr);
+ enable_dma(drv_data->dma_channel);
dma_enable_irq(drv_data->dma_channel);
local_irq_restore(flags);
_
Patches currently in -mm which might be from vapier.adi@xxxxxxxxx are
origin.patch
linux-next.patch
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