On 03/23/2016 08:15 PM, Robert Jarzmik wrote:
Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx> writes:
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
If by some reason pxa2xx_spi_dma_prepare() fails we have not to ignore its
error. In such case we abort the transfer and return the error to upper
level.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx>
---
Reposting Andy's fix from December that got buried to list during
holidays.
---
drivers/spi/spi-pxa2xx.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 85e59a406a4c..47bdbd350a24 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -928,6 +928,7 @@ static void pump_transfers(unsigned long data)
u32 dma_thresh = drv_data->cur_chip->dma_threshold;
u32 dma_burst = drv_data->cur_chip->dma_burst_size;
u32 change_mask = pxa2xx_spi_get_ssrc1_change_mask(drv_data);
+ int err;
/* Get current state information */
message = drv_data->cur_msg;
@@ -1047,7 +1048,12 @@ static void pump_transfers(unsigned long data)
/* Ensure we have the correct interrupt handler */
drv_data->transfer_handler = pxa2xx_spi_dma_transfer;
- pxa2xx_spi_dma_prepare(drv_data, dma_burst);
+ err = pxa2xx_spi_dma_prepare(drv_data, dma_burst);
+ if (err) {
+ message->status = err;
+ giveback(drv_data);
+ return;
+ }
Hi Jarrko,
Even if this patch is perfectly fine, isn't pxa2xx_spi_dma_prepare() leaking
tx_desc if its rx_desc allocation failed ? If so, wouldn't it make sense to add
it to this patch ?
Good catch, it indeeds leak. Also unmapping needs to be done too. Will
fix and resend.
--
Jarkko
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