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* [PATCH] usb: host: fsl-mph-dr-of: check return of dma_set_mask()
@ 2020-10-10  6:03 Ran Wang
  2020-10-10 23:40 ` Peter Chen
  0 siblings, 1 reply; 3+ messages in thread
From: Ran Wang @ 2020-10-10  6:03 UTC (permalink / raw)
  To: Greg Kroah-Hartman
  Cc: Peter Chen, Jun Li, open list:USB SUBSYSTEM, open list, Ran Wang

fsl_usb2_device_register() should stop init if dma_set_mask() return
error.

Fixes: cae058610465 ("drivers/usb/host: fsl: Set DMA_MASK of usb platform device")
Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
---
 drivers/usb/host/fsl-mph-dr-of.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/fsl-mph-dr-of.c b/drivers/usb/host/fsl-mph-dr-of.c
index ae8f60f..44a7e58 100644
--- a/drivers/usb/host/fsl-mph-dr-of.c
+++ b/drivers/usb/host/fsl-mph-dr-of.c
@@ -94,10 +94,13 @@ static struct platform_device *fsl_usb2_device_register(
 
 	pdev->dev.coherent_dma_mask = ofdev->dev.coherent_dma_mask;
 
-	if (!pdev->dev.dma_mask)
+	if (!pdev->dev.dma_mask) {
 		pdev->dev.dma_mask = &ofdev->dev.coherent_dma_mask;
-	else
-		dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+	} else {
+		retval = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
+		if (retval)
+			goto error;
+	}
 
 	retval = platform_device_add_data(pdev, pdata, sizeof(*pdata));
 	if (retval)
-- 
2.7.4


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2020-10-10  6:03 [PATCH] usb: host: fsl-mph-dr-of: check return of dma_set_mask() Ran Wang
2020-10-10 23:40 ` Peter Chen
2020-10-14  7:49   ` Ran Wang

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