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authorKalle Valo <>2008-01-24 14:00:40 -0800
committerLinus Torvalds <>2008-01-24 14:06:44 -0800
commitfeed9bab7b14b77be8d796bcee95e2343fb82955 (patch)
treed46191244459c4dd4c5f6e0ad0c832eaa7894af8 /Makefile
parentdbcc2ec60fe15448e5dfe4153f7347ac82b4da73 (diff)
spi: omap2_mcspi PIO RX fix
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 <> Signed-off-by: David Brownell <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
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