spi/spi-pl022: Use GFP_ATOMIC for allocation from tasklet
tasklets don't allow invocation to sleeping routines. In configure_dma()
routine, sg_alloc_table() was called with GFP_KERNEL flag and so this causes
crash when called from tasklet.
Replace GFP_KERNEL with GFP_ATOMIC to get this fixed.
Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c
index 6209540..01e9aa4 100644
--- a/drivers/spi/spi-pl022.c
+++ b/drivers/spi/spi-pl022.c
@@ -1019,11 +1019,11 @@
pages = (pl022->cur_transfer->len >> PAGE_SHIFT) + 1;
dev_dbg(&pl022->adev->dev, "using %d pages for transfer\n", pages);
- ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_KERNEL);
+ ret = sg_alloc_table(&pl022->sgt_rx, pages, GFP_ATOMIC);
if (ret)
goto err_alloc_rx_sg;
- ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_KERNEL);
+ ret = sg_alloc_table(&pl022->sgt_tx, pages, GFP_ATOMIC);
if (ret)
goto err_alloc_tx_sg;