Commit a9948b61 authored Apr 02, 2006 by David Brownell Committed by Greg Kroah-Hartman May 16, 2006

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

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>

parent 747d844e

drivers/spi/spi.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -522,7 +522,8 @@ int spi_sync(struct spi_device spi, struct spi_message message)
		}
		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;