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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-14 14:29:49 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-14 14:29:49 +1000 |
commit | 11c2d8174ed3dc4f1971564732689b4a39129702 (patch) | |
tree | ac00daa548ea8ac24ae7a5c8062312e335ab9858 /drivers/spi/spidev.c | |
parent | cde274c0c789404df8ece3f9e7d6506caf0127e2 (diff) | |
parent | bce7f793daec3e65ec5c5705d2457b81fe7b5725 (diff) | |
download | op-kernel-dev-11c2d8174ed3dc4f1971564732689b4a39129702.zip op-kernel-dev-11c2d8174ed3dc4f1971564732689b4a39129702.tar.gz |
Merge commit 'origin/HEAD' into test-merge
Manual fixup of include/asm-powerpc/pgtable-ppc64.h
Diffstat (limited to 'drivers/spi/spidev.c')
-rw-r--r-- | drivers/spi/spidev.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/drivers/spi/spidev.c b/drivers/spi/spidev.c index 799337f..f5b60c7 100644 --- a/drivers/spi/spidev.c +++ b/drivers/spi/spidev.c @@ -167,14 +167,14 @@ spidev_read(struct file *filp, char __user *buf, size_t count, loff_t *f_pos) mutex_lock(&spidev->buf_lock); status = spidev_sync_read(spidev, count); - if (status == 0) { + if (status > 0) { unsigned long missing; - missing = copy_to_user(buf, spidev->buffer, count); - if (count && missing == count) + missing = copy_to_user(buf, spidev->buffer, status); + if (missing == status) status = -EFAULT; else - status = count - missing; + status = status - missing; } mutex_unlock(&spidev->buf_lock); @@ -200,8 +200,6 @@ spidev_write(struct file *filp, const char __user *buf, missing = copy_from_user(spidev->buffer, buf, count); if (missing == 0) { status = spidev_sync_write(spidev, count); - if (status == 0) - status = count; } else status = -EFAULT; mutex_unlock(&spidev->buf_lock); |