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: Adaptec OEM Raid Solutions <aacraid@xxxxxxxxxxxxx> 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/ Signed-off-by: Li Zhijian <lizhijian@xxxxxxxxxxx> --- drivers/scsi/aacraid/linit.c | 78 ++++++++++++++++-------------------- 1 file changed, 35 insertions(+), 43 deletions(-) diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c index 68f4dbcfff49..a9c7e3e0ca33 100644 --- a/drivers/scsi/aacraid/linit.c +++ b/drivers/scsi/aacraid/linit.c @@ -558,11 +558,11 @@ static ssize_t aac_show_raid_level(struct device *dev, struct device_attribute * struct scsi_device *sdev = to_scsi_device(dev); struct aac_dev *aac = (struct aac_dev *)(sdev->host->hostdata); if (sdev_channel(sdev) != CONTAINER_CHANNEL) - return snprintf(buf, PAGE_SIZE, sdev->no_uld_attach - ? "Hidden\n" : + return sysfs_emit(buf, sdev->no_uld_attach ? "Hidden\n" : ((aac->jbod && (sdev->type == TYPE_DISK)) ? "JBOD\n" : "")); - return snprintf(buf, PAGE_SIZE, "%s\n", - get_container_type(aac->fsa_dev[sdev_id(sdev)].type)); + + return sysfs_emit(buf, "%s\n", + get_container_type(aac->fsa_dev[sdev_id(sdev)].type)); } static struct device_attribute aac_raid_level_attr = { @@ -585,12 +585,12 @@ static ssize_t aac_show_unique_id(struct device *dev, if (sdev_channel(sdev) == CONTAINER_CHANNEL) memcpy(sn, aac->fsa_dev[sdev_id(sdev)].identifier, sizeof(sn)); - return snprintf(buf, 16 * 2 + 2, - "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n", - sn[0], sn[1], sn[2], sn[3], - sn[4], sn[5], sn[6], sn[7], - sn[8], sn[9], sn[10], sn[11], - sn[12], sn[13], sn[14], sn[15]); + return sysfs_emit(buf, + "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n", + sn[0], sn[1], sn[2], sn[3], + sn[4], sn[5], sn[6], sn[7], + sn[8], sn[9], sn[10], sn[11], + sn[12], sn[13], sn[14], sn[15]); } static struct device_attribute aac_unique_id_attr = { @@ -1195,10 +1195,9 @@ static ssize_t aac_show_model(struct device *device, ++cp; while (*cp == ' ') ++cp; - len = snprintf(buf, PAGE_SIZE, "%s\n", cp); + len = sysfs_emit(buf, "%s\n", cp); } else - len = snprintf(buf, PAGE_SIZE, "%s\n", - aac_drivers[dev->cardtype].model); + len = sysfs_emit(buf, "%s\n", aac_drivers[dev->cardtype].model); return len; } @@ -1214,12 +1213,11 @@ static ssize_t aac_show_vendor(struct device *device, char *cp = sup_adap_info->adapter_type_text; while (*cp && *cp != ' ') ++cp; - len = snprintf(buf, PAGE_SIZE, "%.*s\n", - (int)(cp - (char *)sup_adap_info->adapter_type_text), - sup_adap_info->adapter_type_text); + len = sysfs_emit(buf, "%.*s\n", + (int)(cp - (char *)sup_adap_info->adapter_type_text), + sup_adap_info->adapter_type_text); } else - len = snprintf(buf, PAGE_SIZE, "%s\n", - aac_drivers[dev->cardtype].vname); + len = sysfs_emit(buf, "%s\n", aac_drivers[dev->cardtype].vname); return len; } @@ -1230,23 +1228,19 @@ static ssize_t aac_show_flags(struct device *cdev, struct aac_dev *dev = (struct aac_dev*)class_to_shost(cdev)->hostdata; if (nblank(dprintk(x))) - len = snprintf(buf, PAGE_SIZE, "dprintk\n"); + len = sysfs_emit(buf, "dprintk\n"); #ifdef AAC_DETAILED_STATUS_INFO - len += scnprintf(buf + len, PAGE_SIZE - len, - "AAC_DETAILED_STATUS_INFO\n"); + len += sysfs_emit_at(buf, len, "AAC_DETAILED_STATUS_INFO\n"); #endif if (dev->raw_io_interface && dev->raw_io_64) - len += scnprintf(buf + len, PAGE_SIZE - len, - "SAI_READ_CAPACITY_16\n"); + len += sysfs_emit_at(buf, len, "SAI_READ_CAPACITY_16\n"); if (dev->jbod) - len += scnprintf(buf + len, PAGE_SIZE - len, - "SUPPORTED_JBOD\n"); + len += sysfs_emit_at(buf, len, "SUPPORTED_JBOD\n"); if (dev->supplement_adapter_info.supported_options2 & AAC_OPTION_POWER_MANAGEMENT) - len += scnprintf(buf + len, PAGE_SIZE - len, - "SUPPORTED_POWER_MANAGEMENT\n"); + len += sysfs_emit_at(buf, len, "SUPPORTED_POWER_MANAGEMENT\n"); if (dev->msi) - len += scnprintf(buf + len, PAGE_SIZE - len, "PCI_HAS_MSI\n"); + len += sysfs_emit_at(buf, len, "PCI_HAS_MSI\n"); return len; } @@ -1258,9 +1252,9 @@ static ssize_t aac_show_kernel_version(struct device *device, int len, tmp; tmp = le32_to_cpu(dev->adapter_info.kernelrev); - len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", - tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff, - le32_to_cpu(dev->adapter_info.kernelbuild)); + len = sysfs_emit(buf, "%d.%d-%d[%d]\n", + tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff, + le32_to_cpu(dev->adapter_info.kernelbuild)); return len; } @@ -1272,9 +1266,9 @@ static ssize_t aac_show_monitor_version(struct device *device, int len, tmp; tmp = le32_to_cpu(dev->adapter_info.monitorrev); - len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", - tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff, - le32_to_cpu(dev->adapter_info.monitorbuild)); + len = sysfs_emit(buf, "%d.%d-%d[%d]\n", + tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff, + le32_to_cpu(dev->adapter_info.monitorbuild)); return len; } @@ -1286,9 +1280,9 @@ static ssize_t aac_show_bios_version(struct device *device, int len, tmp; tmp = le32_to_cpu(dev->adapter_info.biosrev); - len = snprintf(buf, PAGE_SIZE, "%d.%d-%d[%d]\n", - tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff, - le32_to_cpu(dev->adapter_info.biosbuild)); + len = sysfs_emit(buf, "%d.%d-%d[%d]\n", + tmp >> 24, (tmp >> 16) & 0xff, tmp & 0xff, + le32_to_cpu(dev->adapter_info.biosbuild)); return len; } @@ -1296,7 +1290,7 @@ static ssize_t aac_show_driver_version(struct device *device, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, "%s\n", aac_driver_version); + return sysfs_emit(buf, "%s\n", aac_driver_version); } static ssize_t aac_show_serial_number(struct device *device, @@ -1322,15 +1316,13 @@ static ssize_t aac_show_serial_number(struct device *device, static ssize_t aac_show_max_channel(struct device *device, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, "%d\n", - class_to_shost(device)->max_channel); + return sysfs_emit(buf, "%d\n", class_to_shost(device)->max_channel); } static ssize_t aac_show_max_id(struct device *device, struct device_attribute *attr, char *buf) { - return snprintf(buf, PAGE_SIZE, "%d\n", - class_to_shost(device)->max_id); + return sysfs_emit(buf, "%d\n", class_to_shost(device)->max_id); } static ssize_t aac_store_reset_adapter(struct device *device, @@ -1360,7 +1352,7 @@ static ssize_t aac_show_reset_adapter(struct device *device, tmp = aac_adapter_check_health(dev); if ((tmp == 0) && dev->in_reset) tmp = -EBUSY; - len = snprintf(buf, PAGE_SIZE, "0x%x\n", tmp); + len = sysfs_emit(buf, "0x%x\n", tmp); return len; } -- 2.29.2
