Messages in this thread Patch in this message | | | From | Greg KH <> | Subject | [PATCH 04/10] SPI: spi bounce buffer has a minimum length | Date | Tue, 16 May 2006 14:38:32 -0700 |
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From: David Brownell <david-b@pacbell.net>
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>
---
drivers/spi/spi.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
a9948b6194b46e489aa3b4d111d6dfd786c39c4b diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 94f5e8e..1168ef0 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -522,7 +522,8 @@ int spi_sync(struct spi_device *spi, str } 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; -- 1.3.2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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