Per filesystems/sysfs.rst, show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. coccinelle complains that there are still a couple of functions that use snprintf(). Convert them to sysfs_emit(). sprintf() and scnprintf() will be converted as well if they have. Generally, this patch is generated by make coccicheck M=<path/to/file> MODE=patch \ COCCI=scripts/coccinelle/api/device_attr_show.cocci No functional change intended CC: Hannes Reinecke <hare@xxxxxxxxxx> CC: "James E.J. Bottomley" <jejb@xxxxxxxxxxxxx> CC: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx> CC: linux-scsi@xxxxxxxxxxxxxxx Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx> --- This is a part of the work "Fix coccicheck device_attr_show warnings"[1] Split them per subsystem so that the maintainer can review it easily [1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@xxxxxxxxxxx/ --- drivers/scsi/myrb.c | 38 ++++++++++---------- drivers/scsi/myrs.c | 88 ++++++++++++++++++++++----------------------- 2 files changed, 63 insertions(+), 63 deletions(-) diff --git a/drivers/scsi/myrb.c b/drivers/scsi/myrb.c index ca2e932dd9b7..06a5e6fb9f99 100644 --- a/drivers/scsi/myrb.c +++ b/drivers/scsi/myrb.c @@ -1767,7 +1767,7 @@ static ssize_t raid_state_show(struct device *dev, int ret; if (!sdev->hostdata) - return snprintf(buf, 16, "Unknown\n"); + return sysfs_emit(buf, "Unknown\n"); if (sdev->channel == myrb_logical_channel(sdev->host)) { struct myrb_ldev_info *ldev_info = sdev->hostdata; @@ -1775,10 +1775,10 @@ static ssize_t raid_state_show(struct device *dev, name = myrb_devstate_name(ldev_info->state); if (name) - ret = snprintf(buf, 32, "%s\n", name); + ret = sysfs_emit(buf, "%s\n", name); else - ret = snprintf(buf, 32, "Invalid (%02X)\n", - ldev_info->state); + ret = sysfs_emit(buf, "Invalid (%02X)\n", + ldev_info->state); } else { struct myrb_pdev_state *pdev_info = sdev->hostdata; unsigned short status; @@ -1796,10 +1796,10 @@ static ssize_t raid_state_show(struct device *dev, else name = myrb_devstate_name(pdev_info->state); if (name) - ret = snprintf(buf, 32, "%s\n", name); + ret = sysfs_emit(buf, "%s\n", name); else - ret = snprintf(buf, 32, "Invalid (%02X)\n", - pdev_info->state); + ret = sysfs_emit(buf, "Invalid (%02X)\n", + pdev_info->state); } return ret; } @@ -1886,11 +1886,11 @@ static ssize_t raid_level_show(struct device *dev, name = myrb_raidlevel_name(ldev_info->raid_level); if (!name) - return snprintf(buf, 32, "Invalid (%02X)\n", - ldev_info->state); - return snprintf(buf, 32, "%s\n", name); + return sysfs_emit(buf, "Invalid (%02X)\n", + ldev_info->state); + return sysfs_emit(buf, "%s\n", name); } - return snprintf(buf, 32, "Physical Drive\n"); + return sysfs_emit(buf, "Physical Drive\n"); } static DEVICE_ATTR_RO(raid_level); @@ -1903,17 +1903,17 @@ static ssize_t rebuild_show(struct device *dev, unsigned char status; if (sdev->channel < myrb_logical_channel(sdev->host)) - return snprintf(buf, 32, "physical device - not rebuilding\n"); + return sysfs_emit(buf, "physical device - not rebuilding\n"); status = myrb_get_rbld_progress(cb, &rbld_buf); if (rbld_buf.ldev_num != sdev->id || status != MYRB_STATUS_SUCCESS) - return snprintf(buf, 32, "not rebuilding\n"); + return sysfs_emit(buf, "not rebuilding\n"); - return snprintf(buf, 32, "rebuilding block %u of %u\n", - rbld_buf.ldev_size - rbld_buf.blocks_left, - rbld_buf.ldev_size); + return sysfs_emit(buf, "rebuilding block %u of %u\n", + rbld_buf.ldev_size - rbld_buf.blocks_left, + rbld_buf.ldev_size); } static ssize_t rebuild_store(struct device *dev, @@ -2140,7 +2140,7 @@ static ssize_t ctlr_num_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrb_hba *cb = shost_priv(shost); - return snprintf(buf, 20, "%u\n", cb->ctlr_num); + return sysfs_emit(buf, "%u\n", cb->ctlr_num); } static DEVICE_ATTR_RO(ctlr_num); @@ -2150,7 +2150,7 @@ static ssize_t firmware_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrb_hba *cb = shost_priv(shost); - return snprintf(buf, 16, "%s\n", cb->fw_version); + return sysfs_emit(buf, "%s\n", cb->fw_version); } static DEVICE_ATTR_RO(firmware); @@ -2160,7 +2160,7 @@ static ssize_t model_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrb_hba *cb = shost_priv(shost); - return snprintf(buf, 16, "%s\n", cb->model_name); + return sysfs_emit(buf, "%s\n", cb->model_name); } static DEVICE_ATTR_RO(model); diff --git a/drivers/scsi/myrs.c b/drivers/scsi/myrs.c index a1eec65a9713..5dda3b669ec1 100644 --- a/drivers/scsi/myrs.c +++ b/drivers/scsi/myrs.c @@ -939,7 +939,7 @@ static ssize_t raid_state_show(struct device *dev, int ret; if (!sdev->hostdata) - return snprintf(buf, 16, "Unknown\n"); + return sysfs_emit(buf, "Unknown\n"); if (sdev->channel >= cs->ctlr_info->physchan_present) { struct myrs_ldev_info *ldev_info = sdev->hostdata; @@ -947,10 +947,10 @@ static ssize_t raid_state_show(struct device *dev, name = myrs_devstate_name(ldev_info->dev_state); if (name) - ret = snprintf(buf, 32, "%s\n", name); + ret = sysfs_emit(buf, "%s\n", name); else - ret = snprintf(buf, 32, "Invalid (%02X)\n", - ldev_info->dev_state); + ret = sysfs_emit(buf, "Invalid (%02X)\n", + ldev_info->dev_state); } else { struct myrs_pdev_info *pdev_info; const char *name; @@ -958,10 +958,10 @@ static ssize_t raid_state_show(struct device *dev, pdev_info = sdev->hostdata; name = myrs_devstate_name(pdev_info->dev_state); if (name) - ret = snprintf(buf, 32, "%s\n", name); + ret = sysfs_emit(buf, "%s\n", name); else - ret = snprintf(buf, 32, "Invalid (%02X)\n", - pdev_info->dev_state); + ret = sysfs_emit(buf, "Invalid (%02X)\n", + pdev_info->dev_state); } return ret; } @@ -1058,7 +1058,7 @@ static ssize_t raid_level_show(struct device *dev, const char *name = NULL; if (!sdev->hostdata) - return snprintf(buf, 16, "Unknown\n"); + return sysfs_emit(buf, "Unknown\n"); if (sdev->channel >= cs->ctlr_info->physchan_present) { struct myrs_ldev_info *ldev_info; @@ -1066,13 +1066,13 @@ static ssize_t raid_level_show(struct device *dev, ldev_info = sdev->hostdata; name = myrs_raid_level_name(ldev_info->raid_level); if (!name) - return snprintf(buf, 32, "Invalid (%02X)\n", - ldev_info->dev_state); + return sysfs_emit(buf, "Invalid (%02X)\n", + ldev_info->dev_state); } else name = myrs_raid_level_name(MYRS_RAID_PHYSICAL); - return snprintf(buf, 32, "%s\n", name); + return sysfs_emit(buf, "%s\n", name); } static DEVICE_ATTR_RO(raid_level); @@ -1086,7 +1086,7 @@ static ssize_t rebuild_show(struct device *dev, unsigned char status; if (sdev->channel < cs->ctlr_info->physchan_present) - return snprintf(buf, 32, "physical device - not rebuilding\n"); + return sysfs_emit(buf, "physical device - not rebuilding\n"); ldev_info = sdev->hostdata; ldev_num = ldev_info->ldev_num; @@ -1098,11 +1098,11 @@ static ssize_t rebuild_show(struct device *dev, return -EIO; } if (ldev_info->rbld_active) { - return snprintf(buf, 32, "rebuilding block %zu of %zu\n", - (size_t)ldev_info->rbld_lba, - (size_t)ldev_info->cfg_devsize); + return sysfs_emit(buf, "rebuilding block %zu of %zu\n", + (size_t)ldev_info->rbld_lba, + (size_t)ldev_info->cfg_devsize); } else - return snprintf(buf, 32, "not rebuilding\n"); + return sysfs_emit(buf, "not rebuilding\n"); } static ssize_t rebuild_store(struct device *dev, @@ -1190,7 +1190,7 @@ static ssize_t consistency_check_show(struct device *dev, unsigned short ldev_num; if (sdev->channel < cs->ctlr_info->physchan_present) - return snprintf(buf, 32, "physical device - not checking\n"); + return sysfs_emit(buf, "physical device - not checking\n"); ldev_info = sdev->hostdata; if (!ldev_info) @@ -1198,11 +1198,11 @@ static ssize_t consistency_check_show(struct device *dev, ldev_num = ldev_info->ldev_num; myrs_get_ldev_info(cs, ldev_num, ldev_info); if (ldev_info->cc_active) - return snprintf(buf, 32, "checking block %zu of %zu\n", - (size_t)ldev_info->cc_lba, - (size_t)ldev_info->cfg_devsize); + return sysfs_emit(buf, "checking block %zu of %zu\n", + (size_t)ldev_info->cc_lba, + (size_t)ldev_info->cfg_devsize); else - return snprintf(buf, 32, "not checking\n"); + return sysfs_emit(buf, "not checking\n"); } static ssize_t consistency_check_store(struct device *dev, @@ -1303,7 +1303,7 @@ static ssize_t serial_show(struct device *dev, memcpy(serial, cs->ctlr_info->serial_number, 16); serial[16] = '\0'; - return snprintf(buf, 16, "%s\n", serial); + return sysfs_emit(buf, "%s\n", serial); } static DEVICE_ATTR_RO(serial); @@ -1313,7 +1313,7 @@ static ssize_t ctlr_num_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrs_hba *cs = shost_priv(shost); - return snprintf(buf, 20, "%d\n", cs->host->host_no); + return sysfs_emit(buf, "%d\n", cs->host->host_no); } static DEVICE_ATTR_RO(ctlr_num); @@ -1361,22 +1361,22 @@ static ssize_t processor_show(struct device *dev, } } if (first_processor && second_processor) - ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n" - "2: %s (%s, %d cpus)\n", - info->cpu[0].cpu_name, - first_processor, info->cpu[0].cpu_count, - info->cpu[1].cpu_name, - second_processor, info->cpu[1].cpu_count); + ret = sysfs_emit(buf, "1: %s (%s, %d cpus)\n" + "2: %s (%s, %d cpus)\n", + info->cpu[0].cpu_name, + first_processor, info->cpu[0].cpu_count, + info->cpu[1].cpu_name, + second_processor, info->cpu[1].cpu_count); else if (first_processor && !second_processor) - ret = snprintf(buf, 64, "1: %s (%s, %d cpus)\n2: absent\n", - info->cpu[0].cpu_name, - first_processor, info->cpu[0].cpu_count); + ret = sysfs_emit(buf, "1: %s (%s, %d cpus)\n2: absent\n", + info->cpu[0].cpu_name, + first_processor, info->cpu[0].cpu_count); else if (!first_processor && second_processor) - ret = snprintf(buf, 64, "1: absent\n2: %s (%s, %d cpus)\n", - info->cpu[1].cpu_name, - second_processor, info->cpu[1].cpu_count); + ret = sysfs_emit(buf, "1: absent\n2: %s (%s, %d cpus)\n", + info->cpu[1].cpu_name, + second_processor, info->cpu[1].cpu_count); else - ret = snprintf(buf, 64, "1: absent\n2: absent\n"); + ret = sysfs_emit(buf, "1: absent\n2: absent\n"); return ret; } @@ -1388,7 +1388,7 @@ static ssize_t model_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrs_hba *cs = shost_priv(shost); - return snprintf(buf, 28, "%s\n", cs->model_name); + return sysfs_emit(buf, "%s\n", cs->model_name); } static DEVICE_ATTR_RO(model); @@ -1398,7 +1398,7 @@ static ssize_t ctlr_type_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrs_hba *cs = shost_priv(shost); - return snprintf(buf, 4, "%d\n", cs->ctlr_info->ctlr_type); + return sysfs_emit(buf, "%d\n", cs->ctlr_info->ctlr_type); } static DEVICE_ATTR_RO(ctlr_type); @@ -1408,7 +1408,7 @@ static ssize_t cache_size_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrs_hba *cs = shost_priv(shost); - return snprintf(buf, 8, "%d MB\n", cs->ctlr_info->cache_size_mb); + return sysfs_emit(buf, "%d MB\n", cs->ctlr_info->cache_size_mb); } static DEVICE_ATTR_RO(cache_size); @@ -1418,10 +1418,10 @@ static ssize_t firmware_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrs_hba *cs = shost_priv(shost); - return snprintf(buf, 16, "%d.%02d-%02d\n", - cs->ctlr_info->fw_major_version, - cs->ctlr_info->fw_minor_version, - cs->ctlr_info->fw_turn_number); + return sysfs_emit(buf, "%d.%02d-%02d\n", + cs->ctlr_info->fw_major_version, + cs->ctlr_info->fw_minor_version, + cs->ctlr_info->fw_turn_number); } static DEVICE_ATTR_RO(firmware); @@ -1488,7 +1488,7 @@ static ssize_t disable_enclosure_messages_show(struct device *dev, struct Scsi_Host *shost = class_to_shost(dev); struct myrs_hba *cs = shost_priv(shost); - return snprintf(buf, 3, "%d\n", cs->disable_enc_msg); + return sysfs_emit(buf, "%d\n", cs->disable_enc_msg); } static ssize_t disable_enclosure_messages_store(struct device *dev, -- 2.29.2
