[v1,1/2] spi: dw: Make DMA request line assignments explicit for Intel Medfield
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Message ID 20200528102311.79948-1-andriy.shevchenko@linux.intel.com
State New
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  • [v1,1/2] spi: dw: Make DMA request line assignments explicit for Intel Medfield
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Commit Message

Andy Shevchenko May 28, 2020, 10:23 a.m. UTC
The 2afccbd283ae ("spi: dw: Discard static DW DMA slave structures")
did a clean up of global variables, which is fine, but messed up with
the carefully provided information in the custom DMA slave structures.
There reader can find an assignment of the DMA request lines in use.

Partially revert the above mentioned commit to restore readability
and maintainability of the code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/spi/spi-dw-mid.c | 14 ++++++--------
 1 file changed, 6 insertions(+), 8 deletions(-)

Comments

Mark Brown May 29, 2020, 5:22 p.m. UTC | #1
On Thu, May 28, 2020 at 01:23:10PM +0300, Andy Shevchenko wrote:
> The 2afccbd283ae ("spi: dw: Discard static DW DMA slave structures")
> did a clean up of global variables, which is fine, but messed up with
> the carefully provided information in the custom DMA slave structures.
> There reader can find an assignment of the DMA request lines in use.

This doesn't apply against current code, please rebase and resend.
Mark Brown May 29, 2020, 9:06 p.m. UTC | #2
On Thu, 28 May 2020 13:23:10 +0300, Andy Shevchenko wrote:
> The 2afccbd283ae ("spi: dw: Discard static DW DMA slave structures")
> did a clean up of global variables, which is fine, but messed up with
> the carefully provided information in the custom DMA slave structures.
> There reader can find an assignment of the DMA request lines in use.
> 
> Partially revert the above mentioned commit to restore readability
> and maintainability of the code.

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/2] spi: dw: Make DMA request line assignments explicit for Intel Medfield
      commit: b3f82dc26c0d4e1348ef81e0189cb8838b8b0d22
[2/2] spi: dw: Refactor mid_spi_dma_setup() to separate DMA and IRQ config
      commit: 3d7db0f11c7ad19979a1a01cac1d379ff040e886

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

Patch
diff mbox series

diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c
index b1710132b7b2..0fd7543dc91a 100644
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -33,10 +33,8 @@  static bool mid_spi_dma_chan_filter(struct dma_chan *chan, void *param)
 
 static int mid_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws)
 {
-	struct dw_dma_slave slave = {
-		.src_id = 0,
-		.dst_id = 0
-	};
+	struct dw_dma_slave tx = { .dst_id = 1 };
+	struct dw_dma_slave rx = { .src_id = 0 };
 	struct pci_dev *dma_dev;
 	dma_cap_mask_t mask;
 
@@ -52,14 +50,14 @@  static int mid_spi_dma_init_mfld(struct device *dev, struct dw_spi *dws)
 	dma_cap_set(DMA_SLAVE, mask);
 
 	/* 1. Init rx channel */
-	slave.dma_dev = &dma_dev->dev;
-	dws->rxchan = dma_request_channel(mask, mid_spi_dma_chan_filter, &slave);
+	rx->dma_dev = &dma_dev->dev;
+	dws->rxchan = dma_request_channel(mask, mid_spi_dma_chan_filter, rx);
 	if (!dws->rxchan)
 		goto err_exit;
 
 	/* 2. Init tx channel */
-	slave.dst_id = 1;
-	dws->txchan = dma_request_channel(mask, mid_spi_dma_chan_filter, &slave);
+	tx->dma_dev = &dma_dev->dev;
+	dws->txchan = dma_request_channel(mask, mid_spi_dma_chan_filter, tx);
 	if (!dws->txchan)
 		goto free_rxchan;