From ca54a9f525236c389f464d0952c8a7d6a4035906 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Fri, 12 Dec 2008 22:06:24 -0800 Subject: [PATCH] sfc: Use mutex_lock_interruptible() for ethtool EEPROM access ethtool must contend with the MTD driver for the SPI bus lock, which may carry out long operations such as flash erase. Allow it to be interrupted while waiting. Signed-off-by: Ben Hutchings Signed-off-by: David S. Miller --- drivers/net/sfc/ethtool.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/net/sfc/ethtool.c b/drivers/net/sfc/ethtool.c index eab3e5c61c7b..3aaece6b12cc 100644 --- a/drivers/net/sfc/ethtool.c +++ b/drivers/net/sfc/ethtool.c @@ -568,10 +568,13 @@ static int efx_ethtool_get_eeprom(struct net_device *net_dev, size_t len; int rc; - mutex_lock(&efx->spi_lock); + rc = mutex_lock_interruptible(&efx->spi_lock); + if (rc) + return rc; rc = falcon_spi_read(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START, eeprom->len, &len, buf); mutex_unlock(&efx->spi_lock); + eeprom->magic = EFX_ETHTOOL_EEPROM_MAGIC; eeprom->len = len; return rc; @@ -588,10 +591,13 @@ static int efx_ethtool_set_eeprom(struct net_device *net_dev, if (eeprom->magic != EFX_ETHTOOL_EEPROM_MAGIC) return -EINVAL; - mutex_lock(&efx->spi_lock); + rc = mutex_lock_interruptible(&efx->spi_lock); + if (rc) + return rc; rc = falcon_spi_write(spi, eeprom->offset + EFX_EEPROM_BOOTCONFIG_START, eeprom->len, &len, buf); mutex_unlock(&efx->spi_lock); + eeprom->len = len; return rc; } -- 2.20.1