lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] SPI: spi bounce buffer has a minimum length

Browse Source 
Make sure that spi_write_then_read() can always handle at least 32 bytes
of transfer (total, both directions), minimizing one portability issue.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
David Brownell
2006-04-02 10:37:40 -08:00
committed by Greg Kroah-Hartman
parent 747d844ee9
commit a9948b6194
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/spi/spi.c
View File

@@ -522,7 +522,8 @@ int spi_sync(struct spi_device *spi, struct spi_message *message)
} }
EXPORT_SYMBOL_GPL(spi_sync); EXPORT_SYMBOL_GPL(spi_sync);
#define SPI_BUFSIZ (SMP_CACHE_BYTES) /* portable code must never pass more than 32 bytes */
#define SPI_BUFSIZ max(32,SMP_CACHE_BYTES)
static u8 *buf; static u8 *buf;