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| author | Ingo Molnar <mingo@elte.hu> | 2009-04-22 14:44:16 +0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-04-22 14:44:20 +0400 |
| commit | 3568b71d46bea87da1936902b6fbb2a3b1154b3d (patch) | |
| tree | 621ba4ccef15b87ce16f0fc2cc1e9b2a3f565ffc /Documentation | |
| parent | 2a3313f494c2f3f74a27d66f0f14b38558b7dba2 (diff) | |
| parent | 091069740304c979f957ceacec39c461d0192158 (diff) | |
| download | linux-3568b71d46bea87da1936902b6fbb2a3b1154b3d.tar.xz | |
Merge commit 'v2.6.30-rc3' into x86/urgent
Merge reason: hpet.c changed upstream, make sure we test against that
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/vfs.txt | 3 | ||||
| -rw-r--r-- | Documentation/spi/spi-summary | 6 |
2 files changed, 7 insertions, 2 deletions
diff --git a/Documentation/filesystems/vfs.txt b/Documentation/filesystems/vfs.txt index deeeed0faa8f..f49eecf2e573 100644 --- a/Documentation/filesystems/vfs.txt +++ b/Documentation/filesystems/vfs.txt @@ -277,8 +277,7 @@ or bottom half). unfreeze_fs: called when VFS is unlocking a filesystem and making it writable again. - statfs: called when the VFS needs to get filesystem statistics. This - is called with the kernel lock held + statfs: called when the VFS needs to get filesystem statistics. remount_fs: called when the filesystem is remounted. This is called with the kernel lock held diff --git a/Documentation/spi/spi-summary b/Documentation/spi/spi-summary index 0f5122eb282b..4a02d2508bc8 100644 --- a/Documentation/spi/spi-summary +++ b/Documentation/spi/spi-summary @@ -511,10 +511,16 @@ SPI MASTER METHODS This sets up the device clock rate, SPI mode, and word sizes. Drivers may change the defaults provided by board_info, and then call spi_setup(spi) to invoke this routine. It may sleep. + Unless each SPI slave has its own configuration registers, don't change them right away ... otherwise drivers could corrupt I/O that's in progress for other SPI devices. + ** BUG ALERT: for some reason the first version of + ** many spi_master drivers seems to get this wrong. + ** When you code setup(), ASSUME that the controller + ** is actively processing transfers for another device. + master->transfer(struct spi_device *spi, struct spi_message *message) This must not sleep. Its responsibility is arrange that the transfer happens and its complete() callback is issued. The two |