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Before transmission of the last word in PIO RX_ONLY mode rx+tx mode is enabled: /* prevent last RX_ONLY read from triggering * more word i/o: switch to rx+tx */ if (c == 0 && tx == NULL) mcspi_write_cs_reg(spi, OMAP2_MCSPI_CHCONF0, l); But because c is decremented after the test, c will never be zero and rx+tx will not be enabled. This breaks RX_ONLY mode PIO transfers. Fix it by decrementing c in the beginning of the various I/O loops. Signed-off-by: Kalle Valo <kalle.valo@nokia.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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| .. | ||
| at25.c | ||
| atmel_spi.c | ||
| atmel_spi.h | ||
| au1550_spi.c | ||
| Kconfig | ||
| Makefile | ||
| mpc52xx_psc_spi.c | ||
| omap_uwire.c | ||
| omap2_mcspi.c | ||
| pxa2xx_spi.c | ||
| spi_bfin5xx.c | ||
| spi_bitbang.c | ||
| spi_butterfly.c | ||
| spi_imx.c | ||
| spi_lm70llp.c | ||
| spi_mpc83xx.c | ||
| spi_s3c24xx_gpio.c | ||
| spi_s3c24xx.c | ||
| spi_txx9.c | ||
| spi.c | ||
| spidev.c | ||
| tle62x0.c | ||
| xilinx_spi.c | ||