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Subject[Patch V2] spi: tegra210-quad: Fix iterator outside loop
Date
Fix warn: iterator used outside loop: 'xfer'. 'xfer' variable contain
invalid value in few conditions. Complete transfer within DATA phase
in successful case and at the end for failed transfer.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Link:https://lore.kernel.org/all/202210191211.46FkzKmv-lkp@intel.com/
Fixes: 8777dd9dff40 ("spi: tegra210-quad: Fix combined sequence")

Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com>
---
V2:
- cs_change check moved to DATA_TRANSFER case
- transfer_end call in error case

drivers/spi/spi-tegra210-quad.c | 12 ++++++++----
1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-tegra210-quad.c b/drivers/spi/spi-tegra210-quad.c
index 9aaca2289c59..0b9bc3b7f53a 100644
--- a/drivers/spi/spi-tegra210-quad.c
+++ b/drivers/spi/spi-tegra210-quad.c
@@ -1156,6 +1156,10 @@ static int tegra_qspi_combined_seq_xfer(struct tegra_qspi *tqspi,
ret = -EIO;
goto exit;
}
+ if (!xfer->cs_change) {
+ tegra_qspi_transfer_end(spi);
+ spi_transfer_delay_exec(xfer);
+ }
break;
default:
ret = -EINVAL;
@@ -1164,14 +1168,14 @@ static int tegra_qspi_combined_seq_xfer(struct tegra_qspi *tqspi,
msg->actual_length += xfer->len;
transfer_phase++;
}
- if (!xfer->cs_change) {
- tegra_qspi_transfer_end(spi);
- spi_transfer_delay_exec(xfer);
- }
ret = 0;

exit:
msg->status = ret;
+ if (ret < 0) {
+ tegra_qspi_transfer_end(spi);
+ spi_transfer_delay_exec(xfer);
+ }

return ret;
}
--
2.17.1
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