[PATCH 26/46] IDE: remove rwsem use from ide-proc core

Greg Kroah-Hartman
2007-04-27T18:59:15Z

The subsystem rwsem is not used by the driver core at all, so the use of
it in the ide-proc code of it doesn't make any sense. Perhaps a local
lock might be needed, but I do not really think so.

Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: linux ide <linux-ide@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/ide/ide-proc.c | 4 ----
1 files changed, 0 insertions(+), 4 deletions(-)

diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index afb71c6..a9e0b30 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -310,14 +310,12 @@ static int proc_ide_read_driver
ide_driver_t *ide_drv;
int len;

- down_read(&dev->bus->subsys.rwsem);
if (dev->driver) {
ide_drv = container_of(dev->driver, ide_driver_t, gen_driver);
len = sprintf(page, "%s version %s\n",
dev->driver->name, ide_drv->version);
} else
len = sprintf(page, "ide-default version 0.9.newide\n");
- up_read(&dev->bus->subsys.rwsem);
PROC_IDE_READ_RETURN(page,start,off,count,eof,len);
}

@@ -327,7 +325,6 @@ static int ide_replace_subdriver(ide_drive_t *drive, const char *driver)
int ret = 1;
int err;

- down_write(&dev->bus->subsys.rwsem);
device_release_driver(dev);
/* FIXME: device can still be in use by previous driver */
strlcpy(drive->driver_req, driver, sizeof(drive->driver_req));
@@ -345,7 +342,6 @@ static int ide_replace_subdriver(ide_drive_t *drive, const char *driver)
}
if (dev->driver && !strcmp(dev->driver->name, driver))
ret = 0;
- up_write(&dev->bus->subsys.rwsem);

return ret;
}
--
1.5.1.2