[PATCH REBASE] spi: sprd: Simplify with dev_err_probe()

[PATCH REBASE] spi: sprd: Simplify with dev_err_probe()

[Krzysztof Kozlowski]

Common pattern of handling deferred probe can be simplified with
dev_err_probe().  Less code and the error value gets printed.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Chunyan Zhang <zhang.lyra@gmail.com>

---

Rebased on broonie/spi.git, for-5.10
---
 drivers/spi/spi-sprd-adi.c |  5 +----
 drivers/spi/spi-sprd.c     | 17 +++++------------
 2 files changed, 6 insertions(+), 16 deletions(-)

diff --git a/drivers/spi/spi-sprd-adi.c b/drivers/spi/spi-sprd-adi.c
index 127b8bd25831..392ec5cfa3d6 100644
--- a/drivers/spi/spi-sprd-adi.c
+++ b/drivers/spi/spi-sprd-adi.c
@@ -504,10 +504,7 @@ static int sprd_adi_probe(struct platform_device *pdev)
 			dev_info(&pdev->dev, "no hardware spinlock supplied\n");
 			break;
 		default:
-			dev_err(&pdev->dev,
-				"failed to find hwlock id, %d\n", ret);
-			fallthrough;
-		case -EPROBE_DEFER:
+			dev_err_probe(&pdev->dev, ret, "failed to find hwlock id\n");
 			goto put_ctlr;
 		}
 	}
diff --git a/drivers/spi/spi-sprd.c b/drivers/spi/spi-sprd.c
index 0443fec3a6ab..635738f54c73 100644
--- a/drivers/spi/spi-sprd.c
+++ b/drivers/spi/spi-sprd.c
@@ -553,22 +553,15 @@ static int sprd_spi_dma_tx_config(struct sprd_spi *ss, struct spi_transfer *t)
 static int sprd_spi_dma_request(struct sprd_spi *ss)
 {
 	ss->dma.dma_chan[SPRD_SPI_RX] = dma_request_chan(ss->dev, "rx_chn");
-	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_RX])) {
-		if (PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]) == -EPROBE_DEFER)
-			return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]);
-
-		dev_err(ss->dev, "request RX DMA channel failed!\n");
-		return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]);
-	}
+	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_RX]))
+		return dev_err_probe(ss->dev, PTR_ERR(ss->dma.dma_chan[SPRD_SPI_RX]),
+				     "request RX DMA channel failed!\n");
 
 	ss->dma.dma_chan[SPRD_SPI_TX]  = dma_request_chan(ss->dev, "tx_chn");
 	if (IS_ERR_OR_NULL(ss->dma.dma_chan[SPRD_SPI_TX])) {
 		dma_release_channel(ss->dma.dma_chan[SPRD_SPI_RX]);
-		if (PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]) == -EPROBE_DEFER)
-			return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]);
-
-		dev_err(ss->dev, "request TX DMA channel failed!\n");
-		return PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]);
+		return dev_err_probe(ss->dev, PTR_ERR(ss->dma.dma_chan[SPRD_SPI_TX]),
+				     "request TX DMA channel failed!\n");
 	}
 
 	return 0;
-- 
2.17.1

Re: [PATCH REBASE] spi: sprd: Simplify with dev_err_probe()

[Mark Brown]

On Thu, 10 Sep 2020 18:07:06 +0200, Krzysztof Kozlowski wrote:
> Common pattern of handling deferred probe can be simplified with
> dev_err_probe().  Less code and the error value gets printed.

Applied to

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

Thanks!

[1/1] spi: sprd: Simplify with dev_err_probe()
      commit: 9d99e55833dddf76dd6470e7ce97201abb612c03

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