[PATCH v2 01/25] scsi: aacraid: Convert sprintf() family to sysfs_emit() family
From: Li Zhijian
Date: Tue Mar 19 2024 - 02:40:27 EST
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