-------------------------------------------------------------------------*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#define REVISION "Revision: 3.20"
#define VERSION "Id: cdrom.c 3.20 2003/12/17"
static const char *mrw_address_space[] = { "DMA", "GAA" };
#if (ERRLOGMASK!=CD_NOTHING)
-#define cdinfo(type, fmt, args...) \
- if ((ERRLOGMASK & type) || debug==1 ) \
- printk(KERN_INFO "cdrom: " fmt, ## args)
+#define cdinfo(type, fmt, args...) \
+do { \
+ if ((ERRLOGMASK & type) || debug == 1) \
+ pr_info(fmt, ##args); \
+} while (0)
#else
-#define cdinfo(type, fmt, args...)
+#define cdinfo(type, fmt, args...) \
+do { \
+ if (0 && (ERRLOGMASK & type) || debug == 1) \
+ pr_info(fmt, ##args); \
+} while (0)
#endif
/* These are used to simplify getting data in from and back to user land */
if (cdo->open == NULL || cdo->release == NULL)
return -EINVAL;
if (!banner_printed) {
- printk(KERN_INFO "Uniform CD-ROM driver " REVISION "\n");
+ pr_info("Uniform CD-ROM driver " REVISION "\n");
banner_printed = 1;
cdrom_sysctl_register();
}
unsigned char buffer[12];
int ret;
- printk(KERN_INFO "cdrom: %sstarting format\n", cont ? "Re" : "");
+ pr_info("%sstarting format\n", cont ? "Re" : "");
/*
* FmtData bit set (bit 4), format type is 1
ret = cdi->ops->generic_packet(cdi, &cgc);
if (ret)
- printk(KERN_INFO "cdrom: bgformat failed\n");
+ pr_info("bgformat failed\n");
return ret;
}
ret = 0;
if (di.mrw_status == CDM_MRW_BGFORMAT_ACTIVE) {
- printk(KERN_INFO "cdrom: issuing MRW back ground "
- "format suspend\n");
+ pr_info("issuing MRW background format suspend\n");
ret = cdrom_mrw_bgformat_susp(cdi, 0);
}
if ((ret = cdrom_mode_select(cdi, &cgc)))
return ret;
- printk(KERN_INFO "cdrom: %s: mrw address space %s selected\n", cdi->name, mrw_address_space[space]);
+ pr_info("%s: mrw address space %s selected\n",
+ cdi->name, mrw_address_space[space]);
return 0;
}
* always reset to DMA lba space on open
*/
if (cdrom_mrw_set_lba_space(cdi, MRW_LBA_DMA)) {
- printk(KERN_ERR "cdrom: failed setting lba address space\n");
+ pr_err("failed setting lba address space\n");
return 1;
}
* 3 - MRW formatting complete
*/
ret = 0;
- printk(KERN_INFO "cdrom open: mrw_status '%s'\n",
- mrw_format_status[di.mrw_status]);
+ pr_info("open: mrw_status '%s'\n", mrw_format_status[di.mrw_status]);
if (!di.mrw_status)
ret = 1;
else if (di.mrw_status == CDM_MRW_BGFORMAT_INACTIVE &&
return;
}
- printk(KERN_INFO "cdrom: %s: dirty DVD+RW media, \"finalizing\"\n",
- cdi->name);
+ pr_info("%s: dirty DVD+RW media, \"finalizing\"\n", cdi->name);
init_cdrom_command(&cgc, NULL, 0, CGC_DATA_NONE);
cgc.cmd[0] = GPCMD_FLUSH_CACHE;
if (!CDROM_CAN(CDC_SELECT_DISC))
return -EDRIVE_CANT_DO_THIS;
- (void) cdi->ops->media_changed(cdi, slot);
+ if (cdi->ops->check_events)
+ cdi->ops->check_events(cdi, 0, slot);
+ else
+ cdi->ops->media_changed(cdi, slot);
if (slot == CDSL_NONE) {
/* set media changed bits, on both queues */
return slot;
}
+/*
+ * As cdrom implements an extra ioctl consumer for media changed
+ * event, it needs to buffer ->check_events() output, such that event
+ * is not lost for both the usual VFS and ioctl paths.
+ * cdi->{vfs|ioctl}_events are used to buffer pending events for each
+ * path.
+ *
+ * XXX: Locking is non-existent. cdi->ops->check_events() can be
+ * called in parallel and buffering fields are accessed without any
+ * exclusion. The original media_changed code had the same problem.
+ * It might be better to simply deprecate CDROM_MEDIA_CHANGED ioctl
+ * and remove this cruft altogether. It doesn't have much usefulness
+ * at this point.
+ */
+static void cdrom_update_events(struct cdrom_device_info *cdi,
+ unsigned int clearing)
+{
+ unsigned int events;
+
+ events = cdi->ops->check_events(cdi, clearing, CDSL_CURRENT);
+ cdi->vfs_events |= events;
+ cdi->ioctl_events |= events;
+}
+
+unsigned int cdrom_check_events(struct cdrom_device_info *cdi,
+ unsigned int clearing)
+{
+ unsigned int events;
+
+ cdrom_update_events(cdi, clearing);
+ events = cdi->vfs_events;
+ cdi->vfs_events = 0;
+ return events;
+}
+EXPORT_SYMBOL(cdrom_check_events);
+
/* We want to make media_changed accessible to the user through an
* ioctl. The main problem now is that we must double-buffer the
* low-level implementation, to assure that the VFS and the user both
{
unsigned int mask = (1 << (queue & 1));
int ret = !!(cdi->mc_flags & mask);
+ bool changed;
if (!CDROM_CAN(CDC_MEDIA_CHANGED))
- return ret;
+ return ret;
+
/* changed since last call? */
- if (cdi->ops->media_changed(cdi, CDSL_CURRENT)) {
+ if (cdi->ops->check_events) {
+ BUG_ON(!queue); /* shouldn't be called from VFS path */
+ cdrom_update_events(cdi, DISK_EVENT_MEDIA_CHANGE);
+ changed = cdi->ioctl_events & DISK_EVENT_MEDIA_CHANGE;
+ cdi->ioctl_events = 0;
+ } else
+ changed = cdi->ops->media_changed(cdi, CDSL_CURRENT);
+
+ if (changed) {
cdi->mc_flags = 0x3; /* set bit on both queues */
ret |= 1;
cdi->media_written = 0;
}
+
cdi->mc_flags &= ~mask; /* clear bit */
return ret;
}
* frame dma, so drop to single frame dma if we need to
*/
if (cdi->cdda_method == CDDA_BPC_FULL && nframes > 1) {
- printk("cdrom: dropping to single frame dma\n");
+ pr_info("dropping to single frame dma\n");
cdi->cdda_method = CDDA_BPC_SINGLE;
goto retry;
}
if (cdi->last_sense != 0x04 && cdi->last_sense != 0x0b)
return ret;
- printk("cdrom: dropping to old style cdda (sense=%x)\n", cdi->last_sense);
+ pr_info("dropping to old style cdda (sense=%x)\n", cdi->last_sense);
cdi->cdda_method = CDDA_OLD;
return cdrom_read_cdda_old(cdi, ubuf, lba, nframes);
}
"\t%d", CDROM_CAN(val) != 0);
break;
default:
- printk(KERN_INFO "cdrom: invalid option%d\n", option);
+ pr_info("invalid option%d\n", option);
return 1;
}
if (!ret)
mutex_unlock(&cdrom_mutex);
return proc_dostring(ctl, write, buffer, lenp, ppos);
done:
- printk(KERN_INFO "cdrom: info buffer too small\n");
+ pr_info("info buffer too small\n");
goto doit;
}
static void __exit cdrom_exit(void)
{
- printk(KERN_INFO "Uniform CD-ROM driver unloaded\n");
+ pr_info("Uniform CD-ROM driver unloaded\n");
cdrom_sysctl_unregister();
}
projects / firefly-linux-kernel-4.4.55.git / blobdiff