diff options
Diffstat (limited to 'drivers/scsi/sd.c')
| -rw-r--r-- | drivers/scsi/sd.c | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 252e43d7c73f..65875a598d62 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -110,7 +110,7 @@ static int sd_remove(struct device *); static void sd_shutdown(struct device *); static int sd_suspend_system(struct device *); static int sd_suspend_runtime(struct device *); -static int sd_resume(struct device *); +static int sd_resume_system(struct device *); static int sd_resume_runtime(struct device *); static void sd_rescan(struct device *); static blk_status_t sd_init_command(struct scsi_cmnd *SCpnt); @@ -603,9 +603,9 @@ static struct class sd_disk_class = { static const struct dev_pm_ops sd_pm_ops = { .suspend = sd_suspend_system, - .resume = sd_resume, + .resume = sd_resume_system, .poweroff = sd_suspend_system, - .restore = sd_resume, + .restore = sd_resume_system, .runtime_suspend = sd_suspend_runtime, .runtime_resume = sd_resume_runtime, }; @@ -2647,6 +2647,13 @@ sd_do_mode_sense(struct scsi_disk *sdkp, int dbd, int modepage, unsigned char *buffer, int len, struct scsi_mode_data *data, struct scsi_sense_hdr *sshdr) { + /* + * If we must use MODE SENSE(10), make sure that the buffer length + * is at least 8 bytes so that the mode sense header fits. + */ + if (sdkp->device->use_10_for_ms && len < 8) + len = 8; + return scsi_mode_sense(sdkp->device, dbd, modepage, buffer, len, SD_TIMEOUT, sdkp->max_retries, data, sshdr); @@ -2825,7 +2832,8 @@ sd_read_cache_type(struct scsi_disk *sdkp, unsigned char *buffer) } } - sd_first_printk(KERN_ERR, sdkp, "No Caching mode page found\n"); + sd_first_printk(KERN_WARNING, sdkp, + "No Caching mode page found\n"); goto defaults; Page_found: @@ -2880,7 +2888,7 @@ defaults: "Assuming drive cache: write back\n"); sdkp->WCE = 1; } else { - sd_first_printk(KERN_ERR, sdkp, + sd_first_printk(KERN_WARNING, sdkp, "Assuming drive cache: write through\n"); sdkp->WCE = 0; } @@ -3570,7 +3578,13 @@ static int sd_probe(struct device *dev) pm_runtime_set_autosuspend_delay(dev, sdp->host->hostt->rpm_autosuspend_delay); } - device_add_disk(dev, gd, NULL); + + error = device_add_disk(dev, gd, NULL); + if (error) { + put_device(&sdkp->dev); + goto out; + } + if (sdkp->capacity) sd_dif_config_host(sdkp); @@ -3618,7 +3632,6 @@ static int sd_remove(struct device *dev) sdkp = dev_get_drvdata(dev); scsi_autopm_get_device(sdkp->device); - async_synchronize_full_domain(&scsi_sd_pm_domain); device_del(&sdkp->dev); del_gendisk(sdkp->disk); sd_shutdown(dev); @@ -3775,6 +3788,9 @@ static int sd_suspend_common(struct device *dev, bool ignore_stop_errors) static int sd_suspend_system(struct device *dev) { + if (pm_runtime_suspended(dev)) + return 0; + return sd_suspend_common(dev, true); } @@ -3801,6 +3817,14 @@ static int sd_resume(struct device *dev) return ret; } +static int sd_resume_system(struct device *dev) +{ + if (pm_runtime_suspended(dev)) + return 0; + + return sd_resume(dev); +} + static int sd_resume_runtime(struct device *dev) { struct scsi_disk *sdkp = dev_get_drvdata(dev); |