The patch titled
Blackfin SPI Driver: tweak magic spi dma sequence to get it working on BF54x
has been added to the -mm tree. Its filename is
blackfin-spi-driver-tweak-magic-spi-dma-sequence-to-get-it-working-on-bf54x.patch
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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
video-framebuffer-move-the-probe-func-into-devinittext-in-blackfin-lcd-driver.patch
linux-next.patch
blackfin-nfc-driver-do-not-clobber-dmac1_perimux.patch
blackfin-nfc-driver-mark-bf5xx_nand_add_partition-as-__devinit.patch
blackfin-nfc-driver-drop-pointless-casts-with-set_dma_callback.patch
mtd-maps-blackfin-async-flash-maps-fix-bug-dont-leak-resources-when-initializing-in-case-of-errors.patch
mtd-maps-blackfin-async-flash-maps-bfin-async-mtd-driver-needs-complex-mappings.patch
mtd-maps-blackfin-async-flash-maps-fix-up-memory-leak.patch
blackfin-spi-driver-ensure-cache-coherency-before-doing-dma.patch
blackfin-spi-driver-remove-useless-asm-cplbinith.patch
blackfin-spi-driver-use-len_in_bytes-when-we-care-about-the-number-of-bytes-transferred.patch
blackfin-spi-driver-pass-dma-overflow-error-to-the-higher-level.patch
blackfin-spi-driver-unify-duplicated-code-in-dma-read-write-paths.patch
blackfin-spi-driver-drop-bogus-cast-and-touchup-dma-label.patch
blackfin-spi-driver-add-a-few-more-dma-debug-messages.patch
blackfin-spi-driver-do-not-check-for-spi-errors-if-dma-itself-did-not-flag-any.patch
blackfin-spi-driver-use-the-properl-bit_ctl_xxx-defines.patch
blackfin-spi-driver-spi-slave-select-code-cleanup.patch
blackfin-spi-driver-get-dma-working-for-spi-flashes.patch
blackfin-spi-driver-add-timeout-while-waiting-for-spif-in-dma-irq-handler.patch
blackfin-spi-driver-tweak-magic-spi-dma-sequence-to-get-it-working-on-bf54x.patch
blackfin-spi-driver-use-bfin_spi_-prefix-on-all-functions.patch
blackfin-spi-driver-fix-null-pointer-crash.patch
blackfin-spi-driver-add-comment-about-full-duplex-dma-according-to-david-brownell.patch
bin_elf_fdpic-check-the-return-value-of-clear_user.patch
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