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spi: spi-ti-qspi: fix warning

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drivers/spi/spi-ti-qspi.c: In function ‘ti_qspi_start_transfer_one’:
drivers/spi/spi-ti-qspi.c:392:8: warning: ‘rx_wlen’ may be used uninitialized in this function [-Wmaybe-uninitialized]
  392 |     if (rx_wlen >= 32)
      |        ^
drivers/spi/spi-ti-qspi.c:318:12: note: ‘rx_wlen’ was declared here
  318 |  u8 rxlen, rx_wlen;
      |            ^~~~~~~

The warning is a false positive; it is not thrown by all compiler versions, e.g.
Red Hat Cross 9.2.1-1 but not Linaro GCC 7.5-2019.12.

Signed-off-by: Jean Pihet <jean.pihet@newoldbits.com>
Link: https://lore.kernel.org/r/20200115100700.3357-1-jean.pihet@newoldbits.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Jean Pihet 2020-01-15 11:07:00 +01:00 committed by Mark Brown
parent 2f3d8035b0
commit 6925212f32
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GPG Key ID: 24D68B725D5487D0
1 changed files with 1 additions and 0 deletions
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drivers/spi/spi-ti-qspi.c
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@ -332,6 +332,7 @@ static int qspi_read_msg(struct ti_qspi *qspi, struct spi_transfer *t,
break;
}
wlen = t->bits_per_word >> 3; /* in bytes */
rx_wlen = wlen;
while (count) {
dev_dbg(qspi->dev, "rx cmd %08x dc %08x\n", cmd, qspi->dc);