3.2.65-rc1 review patch. If anyone has any objections, please let me know.
------------------
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
commit 63d84b1a46957b3ecc56af8087220c0df42e0ef2 upstream.
commit fb57862ead652454ceeb659617404c5f13bc34b5 upstream.
If the driver was compiled with DMA support, but DMA channels weren't acquired
by some reason, mid_spi_dma_exit() will crash the kernel.
Fixes: 7063c0d942a1 (spi/dw_spi: add DMA support)
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
---
drivers/spi/spi-dw-mid.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/spi/spi-dw-mid.c
+++ b/drivers/spi/spi-dw-mid.c
@@ -88,6 +88,8 @@ err_exit:
static void mid_spi_dma_exit(struct dw_spi *dws)
{
+ if (!dws->dma_inited)
+ return;
dma_release_channel(dws->txchan);
dma_release_channel(dws->rxchan);
}
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html