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| author | Rusty Russell <rusty@rustcorp.com.au> | 2010-08-11 23:04:27 -0600 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2010-08-11 23:04:31 +0930 |
| commit | d6d1b650ae6acce73d55dd0246de22180303ae73 (patch) | |
| tree | 7a342999c119a5ee6395966cee91ddf5186f5665 /drivers/usb/atm | |
| parent | dca41306395eab37e222ff9e72765e692fcc7251 (diff) | |
| download | linux-d6d1b650ae6acce73d55dd0246de22180303ae73.tar.gz linux-d6d1b650ae6acce73d55dd0246de22180303ae73.tar.bz2 linux-d6d1b650ae6acce73d55dd0246de22180303ae73.zip | |
param: simple locking for sysfs-writable charp parameters
Since the writing to sysfs can free the old one, we need to block that
when we access the charp variables.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Tested-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Dan Williams <dcbw@redhat.com>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Jing Huang <huangj@brocade.com>
Cc: James E.J. Bottomley <James.Bottomley@suse.de>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: David S. Miller <davem@davemloft.net>
Cc: user-mode-linux-devel@lists.sourceforge.net
Cc: libertas-dev@lists.infradead.org
Cc: linux-wireless@vger.kernel.org
Cc: netdev@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Diffstat (limited to 'drivers/usb/atm')
| -rw-r--r-- | drivers/usb/atm/ueagle-atm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 5b3f555e01c9..ea071a5b6eee 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -1577,6 +1577,7 @@ static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver) char file_arr[] = "CMVxy.bin"; char *file; + kparam_block_sysfs_write(cmv_file); /* set proper name corresponding modem version and line type */ if (cmv_file[sc->modem_index] == NULL) { if (UEA_CHIP_VERSION(sc) == ADI930) @@ -1595,6 +1596,7 @@ static void cmvs_file_name(struct uea_softc *sc, char *const cmv_name, int ver) strlcat(cmv_name, file, UEA_FW_NAME_MAX); if (ver == 2) strlcat(cmv_name, ".v2", UEA_FW_NAME_MAX); + kparam_unblock_sysfs_write(cmv_file); } static int request_cmvs_old(struct uea_softc *sc, |