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4352c2858f
* Accept transfers without bits_per_word set. * Work around the inability of the hardware of keeping CS asserted. Signed-off-by: Jonas Gorski <jogo@openwrt.org> git-svn-id: svn://svn.openwrt.org/openwrt/trunk@34320 3c298f89-4303-0410-b956-a3cf2f4a3e73
30 lines
1007 B
Diff
30 lines
1007 B
Diff
From fbef4dff80be6254e36ab5b9c655d248a3991ded Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jonas.gorski@gmail.com>
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Date: Sat, 24 Nov 2012 12:08:22 +0100
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Subject: [PATCH 3.7] spi/bcm63xx: fix transfer bits_per_words check
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Transfers often do not have bits_per_words set, so use the spi device's
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bits_per_words in this case.
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This fixes the driver rejecting valid transfers e.g. generated by
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spi_write() or spi_read().
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Cc: stable@vger.kernel.org
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Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
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---
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drivers/spi/spi-bcm63xx.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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--- a/drivers/spi/spi-bcm63xx.c
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+++ b/drivers/spi/spi-bcm63xx.c
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@@ -103,7 +103,8 @@ static int bcm63xx_spi_check_transfer(st
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{
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u8 bits_per_word;
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- bits_per_word = (t) ? t->bits_per_word : spi->bits_per_word;
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+ bits_per_word = (t && t->bits_per_word) ?
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+ t->bits_per_word : spi->bits_per_word;
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if (bits_per_word != 8) {
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dev_err(&spi->dev, "%s, unsupported bits_per_word=%d\n",
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__func__, bits_per_word);
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