diff options
author | Arjan van de Ven <arjan@infradead.org> | 2006-01-11 13:16:10 +0100 |
---|---|---|
committer | James Bottomley <jejb@mulgrave.(none)> | 2006-01-12 11:53:11 -0600 |
commit | 0b9506723826c68b50fa33e345700ddcac1bed36 (patch) | |
tree | da3e432ef4517c47ebdc088c6322d0ac51193127 /drivers/scsi/ch.c | |
parent | dacee84b070c4e705a5b6446f1f0a6a6e2f8d7a4 (diff) | |
download | kernel_samsung_espresso10-0b9506723826c68b50fa33e345700ddcac1bed36.zip kernel_samsung_espresso10-0b9506723826c68b50fa33e345700ddcac1bed36.tar.gz kernel_samsung_espresso10-0b9506723826c68b50fa33e345700ddcac1bed36.tar.bz2 |
[SCSI] turn most scsi semaphores into mutexes
the scsi layer is using semaphores in a mutex way, this patch converts
these into using mutexes instead
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/ch.c')
-rw-r--r-- | drivers/scsi/ch.c | 33 |
1 files changed, 17 insertions, 16 deletions
diff --git a/drivers/scsi/ch.c b/drivers/scsi/ch.c index 4299fab..c3f2728 100644 --- a/drivers/scsi/ch.c +++ b/drivers/scsi/ch.c @@ -22,6 +22,7 @@ #include <linux/completion.h> #include <linux/compat.h> #include <linux/chio.h> /* here are all the ioctls */ +#include <linux/mutex.h> #include <scsi/scsi.h> #include <scsi/scsi_cmnd.h> @@ -111,7 +112,7 @@ typedef struct { u_int counts[CH_TYPES]; u_int unit_attention; u_int voltags; - struct semaphore lock; + struct mutex lock; } scsi_changer; static LIST_HEAD(ch_devlist); @@ -565,7 +566,7 @@ static int ch_gstatus(scsi_changer *ch, int type, unsigned char __user *dest) u_char data[16]; unsigned int i; - down(&ch->lock); + mutex_lock(&ch->lock); for (i = 0; i < ch->counts[type]; i++) { if (0 != ch_read_element_status (ch, ch->firsts[type]+i,data)) { @@ -582,7 +583,7 @@ static int ch_gstatus(scsi_changer *ch, int type, unsigned char __user *dest) if (0 != retval) break; } - up(&ch->lock); + mutex_unlock(&ch->lock); return retval; } @@ -687,11 +688,11 @@ static int ch_ioctl(struct inode * inode, struct file * file, dprintk("CHIOPOSITION: invalid parameter\n"); return -EBADSLT; } - down(&ch->lock); + mutex_lock(&ch->lock); retval = ch_position(ch,0, ch->firsts[pos.cp_type] + pos.cp_unit, pos.cp_flags & CP_INVERT); - up(&ch->lock); + mutex_unlock(&ch->lock); return retval; } @@ -708,12 +709,12 @@ static int ch_ioctl(struct inode * inode, struct file * file, return -EBADSLT; } - down(&ch->lock); + mutex_lock(&ch->lock); retval = ch_move(ch,0, ch->firsts[mv.cm_fromtype] + mv.cm_fromunit, ch->firsts[mv.cm_totype] + mv.cm_tounit, mv.cm_flags & CM_INVERT); - up(&ch->lock); + mutex_unlock(&ch->lock); return retval; } @@ -731,14 +732,14 @@ static int ch_ioctl(struct inode * inode, struct file * file, return -EBADSLT; } - down(&ch->lock); + mutex_lock(&ch->lock); retval = ch_exchange (ch,0, ch->firsts[mv.ce_srctype] + mv.ce_srcunit, ch->firsts[mv.ce_fdsttype] + mv.ce_fdstunit, ch->firsts[mv.ce_sdsttype] + mv.ce_sdstunit, mv.ce_flags & CE_INVERT1, mv.ce_flags & CE_INVERT2); - up(&ch->lock); + mutex_unlock(&ch->lock); return retval; } @@ -772,7 +773,7 @@ static int ch_ioctl(struct inode * inode, struct file * file, buffer = kmalloc(512, GFP_KERNEL | GFP_DMA); if (!buffer) return -ENOMEM; - down(&ch->lock); + mutex_lock(&ch->lock); voltag_retry: memset(cmd,0,sizeof(cmd)); @@ -823,7 +824,7 @@ static int ch_ioctl(struct inode * inode, struct file * file, goto voltag_retry; } kfree(buffer); - up(&ch->lock); + mutex_unlock(&ch->lock); if (copy_to_user(argp, &cge, sizeof (cge))) return -EFAULT; @@ -832,9 +833,9 @@ static int ch_ioctl(struct inode * inode, struct file * file, case CHIOINITELEM: { - down(&ch->lock); + mutex_lock(&ch->lock); retval = ch_init_elem(ch); - up(&ch->lock); + mutex_unlock(&ch->lock); return retval; } @@ -851,12 +852,12 @@ static int ch_ioctl(struct inode * inode, struct file * file, return -EBADSLT; } elem = ch->firsts[csv.csv_type] + csv.csv_unit; - down(&ch->lock); + mutex_lock(&ch->lock); retval = ch_set_voltag(ch, elem, csv.csv_flags & CSV_AVOLTAG, csv.csv_flags & CSV_CLEARTAG, csv.csv_voltag); - up(&ch->lock); + mutex_unlock(&ch->lock); return retval; } @@ -929,7 +930,7 @@ static int ch_probe(struct device *dev) memset(ch,0,sizeof(*ch)); ch->minor = ch_devcount; sprintf(ch->name,"ch%d",ch->minor); - init_MUTEX(&ch->lock); + mutex_init(&ch->lock); ch->device = sd; ch_readconfig(ch); if (init) |