4.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Sifan Naeem <sifan.na...@imgtec.com>
commit 011710e2ab659c7ad6e5e554806414bd7a9508be upstream.
Calling spfi_wait_all_done is not required if the transfer has timed
out before all data is transferred.
spfi_wait_all_done polls for Alldone interrupt which is triggered to
mark the transfer as complete and to indicate it is now safe to issue
a new transfer.
Fixes: 8c2c8c0 ("spi: img-spfi: Control CS lines with GPIO")
Signed-off-by: Sifan Naeem <sifan.na...@imgtec.com>
Reviewed-by: Andrew Bresticker <abres...@chromium.org>
Signed-off-by: Mark Brown <broo...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/spi/spi-img-spfi.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/spi/spi-img-spfi.c
+++ b/drivers/spi/spi-img-spfi.c
@@ -267,15 +267,15 @@ static int img_spfi_start_pio(struct spi
cpu_relax();
}
- ret = spfi_wait_all_done(spfi);
- if (ret < 0)
- return ret;
-
if (rx_bytes > 0 || tx_bytes > 0) {
dev_err(spfi->dev, "PIO transfer timed out\n");
return -ETIMEDOUT;
}
+ ret = spfi_wait_all_done(spfi);
+ if (ret < 0)
+ return ret;
+
return 0;
}
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