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| author |   Martin Sperl <kernel@martin.sperl.org> | 2015-11-27 12:31:09 +0000 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2015-11-27 12:55:22 +0000 |
| commit | 77e8058810303e5c18b462adb4f761dbb4f3b657 (patch) | |
| tree | 51c78e2bba952160606fb755de2b70b81aad23bf /drivers/spi | |
| parent | Linux 4.4-rc1 (diff) | |
| download | linux-dev-77e8058810303e5c18b462adb4f761dbb4f3b657.tar.xz linux-dev-77e8058810303e5c18b462adb4f761dbb4f3b657.zip | |
spi: bugfix: spi_message.transfer_length does not get reset
When submitting an identical spi_message multiple times via spi_sync
the spi_message.frame_length does not get reset to 0 in __spi_validate
before adding up all spi_transfer.len resulting in
frame_length > actual_length on all but the first spi_sync call.
Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index e2415be209d5..a0e346f3b71e 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -2130,6 +2130,7 @@ static int __spi_validate(struct spi_device *spi, struct spi_message *message) * Set transfer tx_nbits and rx_nbits as single transfer default * (SPI_NBITS_SINGLE) if it is not set for this transfer. */ + message->frame_length = 0; list_for_each_entry(xfer, &message->transfers, transfer_list) { message->frame_length += xfer->len; if (!xfer->bits_per_word) |