diff options
Diffstat (limited to 'drivers/ide/ide-proc.c')
-rw-r--r-- | drivers/ide/ide-proc.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c index 4b1e43b..4063d2c 100644 --- a/drivers/ide/ide-proc.c +++ b/drivers/ide/ide-proc.c @@ -307,17 +307,41 @@ static int proc_ide_read_driver (char *page, char **start, off_t off, int count, int *eof, void *data) { ide_drive_t *drive = (ide_drive_t *) data; - ide_driver_t *driver = drive->driver; + struct device *dev = &drive->gendev; + ide_driver_t *ide_drv; int len; - if (driver) { + 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", - driver->name, driver->version); + 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); } +static int ide_replace_subdriver(ide_drive_t *drive, const char *driver) +{ + struct device *dev = &drive->gendev; + int ret = 1; + + 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)); + device_attach(dev); + drive->driver_req[0] = 0; + if (dev->driver == NULL) + device_attach(dev); + if (dev->driver && !strcmp(dev->driver->name, driver)) + ret = 0; + up_write(&dev->bus->subsys.rwsem); + + return ret; +} + static int proc_ide_write_driver (struct file *file, const char __user *buffer, unsigned long count, void *data) { @@ -488,16 +512,32 @@ void destroy_proc_ide_interface(ide_hwif_t *hwif) } } -extern struct seq_operations ide_drivers_op; +static int proc_print_driver(struct device_driver *drv, void *data) +{ + ide_driver_t *ide_drv = container_of(drv, ide_driver_t, gen_driver); + struct seq_file *s = data; + + seq_printf(s, "%s version %s\n", drv->name, ide_drv->version); + + return 0; +} + +static int ide_drivers_show(struct seq_file *s, void *p) +{ + bus_for_each_drv(&ide_bus_type, NULL, s, proc_print_driver); + return 0; +} + static int ide_drivers_open(struct inode *inode, struct file *file) { - return seq_open(file, &ide_drivers_op); + return single_open(file, &ide_drivers_show, NULL); } + static struct file_operations ide_drivers_operations = { .open = ide_drivers_open, .read = seq_read, .llseek = seq_lseek, - .release = seq_release, + .release = single_release, }; void proc_ide_create(void) |