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-rw-r--r--drivers/scsi/ufs/ufs-debugfs.c103
-rw-r--r--drivers/scsi/ufs/ufshcd.h1
2 files changed, 0 insertions, 104 deletions
diff --git a/drivers/scsi/ufs/ufs-debugfs.c b/drivers/scsi/ufs/ufs-debugfs.c
index 072029b1e938..479b75cb8375 100644
--- a/drivers/scsi/ufs/ufs-debugfs.c
+++ b/drivers/scsi/ufs/ufs-debugfs.c
@@ -47,7 +47,6 @@ struct desc_field_offset {
#ifdef CONFIG_UFS_FAULT_INJECTION
#define INJECT_COMMAND_HANG (0x0)
-#define ERR_CODES_ALL_ENABLED 0xFFFFFFFF
static DECLARE_FAULT_ATTR(fail_default_attr);
static char *fail_request;
@@ -56,13 +55,11 @@ module_param(fail_request, charp, 0);
/**
* struct ufsdbg_err_scenario - error scenario use case
* @name: the name of the error scenario
- * @err_code_mask: enabled error codes for this scenario
* @err_code_arr: error codes array for this error scenario
* @num_err_codes: number of error codes in err_code_arr
*/
struct ufsdbg_err_scenario {
const char *name;
- u32 err_code_mask;
const int *err_code_arr;
u32 num_err_codes;
u32 num_err_injected;
@@ -111,73 +108,61 @@ static const int err_inject_query_err_codes[] = {
static struct ufsdbg_err_scenario err_scen_arr[] = {
{
"ERR_INJECT_INTR",
- ERR_CODES_ALL_ENABLED,
err_inject_intr_err_codes,
ARRAY_SIZE(err_inject_intr_err_codes),
},
{
"ERR_INJECT_HIBERN8_ENTER",
- ERR_CODES_ALL_ENABLED,
NULL,
0,
},
{
"ERR_INJECT_HIBERN8_EXIT",
- ERR_CODES_ALL_ENABLED,
NULL,
0,
},
{
"ERR_INJECT_PWR_CHANGE",
- ERR_CODES_ALL_ENABLED,
err_inject_pwr_change_err_codes,
ARRAY_SIZE(err_inject_pwr_change_err_codes),
},
{
"ERR_INJECT_LINK_STARTUP",
- ERR_CODES_ALL_ENABLED,
err_inject_link_startup_err_codes,
ARRAY_SIZE(err_inject_link_startup_err_codes),
},
{
"ERR_INJECT_UIC",
- ERR_CODES_ALL_ENABLED,
err_inject_uic_err_codes,
ARRAY_SIZE(err_inject_uic_err_codes),
},
{
"ERR_INJECT_DME_ATTR",
- ERR_CODES_ALL_ENABLED,
err_inject_dme_attr_err_codes,
ARRAY_SIZE(err_inject_dme_attr_err_codes),
},
{
"ERR_INJECT_QUERY",
- ERR_CODES_ALL_ENABLED,
err_inject_query_err_codes,
ARRAY_SIZE(err_inject_query_err_codes),
},
{
"ERR_INJECT_RUNTIME_PM",
- ERR_CODES_ALL_ENABLED,
NULL,
0,
},
{
"ERR_INJECT_SYSTEM_PM",
- ERR_CODES_ALL_ENABLED,
NULL,
0,
},
{
"ERR_INJECT_CLOCK_GATING_SCALING",
- ERR_CODES_ALL_ENABLED,
NULL,
0,
},
{
"ERR_INJECT_PHY_POWER_UP_SEQ",
- ERR_CODES_ALL_ENABLED,
NULL,
0,
},
@@ -290,10 +275,6 @@ ufsdbg_find_err_code(enum ufsdbg_err_inject_scenario usecase,
err_code_index = prandom_u32() % err_scen->num_err_codes;
- /* if the randomly chosen error code is not an enabled error code */
- if (!(err_scen->err_code_mask & (1 << err_code_index)))
- return false;
-
*index = err_code_index;
*ret = err_scen->err_code_arr[err_code_index];
return true;
@@ -369,77 +350,6 @@ out:
return;
}
-static int ufsdbg_error_injection_mask_read(struct seq_file *file, void *data)
-{
- struct ufs_hba *hba = (struct ufs_hba *)file->private;
- enum ufsdbg_err_inject_scenario err_case;
-
- seq_puts(file, "echo \"x,y\" > /sys/kernel/debug/.../err_inj_codes\n");
- seq_puts(file, "for error scenario x (decimal), enable error codes bitwise y (hexadecimal)\n\n");
- seq_puts(file, "example: echo \"2,0x6\" > /sys/kernel/debug/.../err_inj_codes\n");
- seq_puts(file, "for error scenario ERR_INJECT_HIBERN8_EXIT_ERR (error scenario#2)\n");
- seq_puts(file, "enable error codes 0100b and 0010b (0110b)\n\n");
- seq_printf(file, "%-40s %-20s %-17s %-15s %-15s\n",
- "Error Scenario:", "Error-Scenario#",
- "Bit[#]", "STATUS", "Enabled Err Codes");
-
- for (err_case = 0; err_case < ERR_INJECT_MAX_ERR_SCENARIOS;
- ++err_case) {
- seq_printf(file, "%-40s %-20d 0x%-15x %-15s 0x%-15x\n",
- err_scen_arr[err_case].name,
- err_case,
- (1 << err_case),
- hba->debugfs_files.err_inj_scenario_mask &
- (1 << err_case) ? "ENABLE" : "DISABLE",
- err_scen_arr[err_case].err_code_mask);
- }
-
- return 0;
-}
-
-static
-int ufsdbg_err_code_open(struct inode *inode, struct file *file)
-{
- return single_open(file,
- ufsdbg_error_injection_mask_read, inode->i_private);
-}
-
-static ssize_t ufsdbg_err_code_write(struct file *file,
- const char __user *ubuf, size_t cnt,
- loff_t *ppos)
-{
-#define ERROR_CODE_CONTROL_BUF 20
- struct ufs_hba *hba = file->f_mapping->host->i_private;
- char buf[ERROR_CODE_CONTROL_BUF] = {0};
- int ret;
- int err_code_mask = 0;
- int err_scen = 0;
-
- ret = simple_write_to_buffer(buf, ERROR_CODE_CONTROL_BUF,
- ppos, ubuf, cnt);
-
- if (sscanf(buf, "%d,0x%x", &err_scen, &err_code_mask) != 2) {
- dev_err(hba->dev, "%s: invalid number of arguments or format\n",
- __func__);
- return -EINVAL;
- }
-
- if (err_scen >= ERR_INJECT_MAX_ERR_SCENARIOS) {
- dev_err(hba->dev, "%s: invalid number error scenario\n",
- __func__);
- return -EINVAL;
- }
-
- err_scen_arr[err_scen].err_code_mask = err_code_mask;
- return cnt;
-}
-
-static const struct file_operations ufsdbg_err_code_ops = {
- .open = ufsdbg_err_code_open,
- .read = seq_read,
- .write = ufsdbg_err_code_write,
-};
-
static int ufsdbg_err_inj_stats_read(struct seq_file *file, void *data)
{
enum ufsdbg_err_inject_scenario err;
@@ -516,17 +426,6 @@ static void ufsdbg_setup_fault_injection(struct ufs_hba *hba)
goto fail_err_inj_scenario;
}
- hba->debugfs_files.err_inj_codes =
- debugfs_create_file("err_inj_codes", S_IRUSR | S_IWUSR,
- hba->debugfs_files.debugfs_root, hba,
- &ufsdbg_err_code_ops);
- if (!hba->debugfs_files.err_inj_codes) {
- dev_err(hba->dev,
- "%s: failed create error_codes debugfs entry\n",
- __func__);
- goto fail_err_inj_codes;
- }
-
hba->debugfs_files.err_inj_stats =
debugfs_create_file("err_inj_stats", S_IRUSR | S_IWUSR,
hba->debugfs_files.debugfs_root, hba,
@@ -541,8 +440,6 @@ static void ufsdbg_setup_fault_injection(struct ufs_hba *hba)
return;
fail_err_inj_stats:
- debugfs_remove(hba->debugfs_files.err_inj_codes);
-fail_err_inj_codes:
debugfs_remove(hba->debugfs_files.err_inj_scenario);
fail_err_inj_scenario:
debugfs_remove_recursive(fault_dir);
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h
index 86b3d8b8f171..c36ab80989bd 100644
--- a/drivers/scsi/ufs/ufshcd.h
+++ b/drivers/scsi/ufs/ufshcd.h
@@ -536,7 +536,6 @@ struct debugfs_files {
u32 dme_peer_attr_id;
struct dentry *reset_controller;
#ifdef CONFIG_UFS_FAULT_INJECTION
- struct dentry *err_inj_codes;
struct dentry *err_inj_scenario;
struct dentry *err_inj_stats;
u32 err_inj_scenario_mask;
generated by cgit v1.2.3 (git 2.25.1) at 2026-08-04 04:29:27 +0000