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| author | Albin Tonnerre <albin.tonnerre@free-electrons.com> | 2010-03-14 18:47:23 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2010-04-09 23:05:54 +0200 |
| commit | f852a0c3bfe0b30b4816135b9a0d2aaae7e5de6a (patch) | |
| tree | b2d4528ddbf4bb78a73f29d5ed4a375fad7a14c4 /drivers/mtd/spi/eeprom_m95xxx.c | |
| parent | 74b86d2d51843a48b5ca4981173f95768e3466cc (diff) | |
| download | u-boot-imx-f852a0c3bfe0b30b4816135b9a0d2aaae7e5de6a.zip u-boot-imx-f852a0c3bfe0b30b4816135b9a0d2aaae7e5de6a.tar.gz u-boot-imx-f852a0c3bfe0b30b4816135b9a0d2aaae7e5de6a.tar.bz2 | |
drivers/mtd/spi/eeprom_m95xxx.c: add missing error checking
Signed-off-by: Albin Tonnerre <albin.tonnerre@free-electrons.com>
Diffstat (limited to 'drivers/mtd/spi/eeprom_m95xxx.c')
| -rw-r--r-- | drivers/mtd/spi/eeprom_m95xxx.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/spi/eeprom_m95xxx.c b/drivers/mtd/spi/eeprom_m95xxx.c index 0148d00..632db4e 100644 --- a/drivers/mtd/spi/eeprom_m95xxx.c +++ b/drivers/mtd/spi/eeprom_m95xxx.c @@ -44,6 +44,9 @@ ssize_t spi_read (uchar *addr, int alen, uchar *buffer, int len) slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, 1, 1000000, CONFIG_DEFAULT_SPI_MODE); + if(!slave) + return 0; + spi_claim_bus(slave); /* command */ @@ -75,6 +78,9 @@ ssize_t spi_write (uchar *addr, int alen, uchar *buffer, int len) slave = spi_setup_slave(CONFIG_DEFAULT_SPI_BUS, 1, 1000000, CONFIG_DEFAULT_SPI_MODE); + if (!slave) + return 0; + spi_claim_bus(slave); buf[0] = SPI_EEPROM_WREN; |