[PATCH 02/13] scsi: hisi_sas: Fix type casting and missing static qualifier in debugfs code

From: John Garry
Date: Fri Jan 25 2019 - 09:23:21 EST


Sparse can detect some type casting issues in the debugfs code, so
fix it up.

Also a missing static qualifier is added to hisi_sas_debugfs_to_reg_name().

Signed-off-by: John Garry <john.garry@xxxxxxxxxx>
---
drivers/scsi/hisi_sas/hisi_sas.h | 4 ++--
drivers/scsi/hisi_sas/hisi_sas_main.c | 21 +++++++++++----------
2 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h
index b8b1ded..5bb6759 100644
--- a/drivers/scsi/hisi_sas/hisi_sas.h
+++ b/drivers/scsi/hisi_sas/hisi_sas.h
@@ -359,8 +359,8 @@ struct hisi_hba {
u32 intr_coal_count; /* Interrupt count to coalesce */

/* debugfs memories */
- void *debugfs_global_reg;
- void *debugfs_port_reg[HISI_SAS_MAX_PHYS];
+ u32 *debugfs_global_reg;
+ u32 *debugfs_port_reg[HISI_SAS_MAX_PHYS];
void *debugfs_complete_hdr[HISI_SAS_MAX_QUEUES];
struct hisi_sas_cmd_hdr *debugfs_cmd_hdr[HISI_SAS_MAX_QUEUES];
struct hisi_sas_iost *debugfs_iost;
diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c
index 72d2295..73a545a 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_main.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_main.c
@@ -2547,7 +2547,7 @@ static void hisi_sas_debugfs_snapshot_iost_reg(struct hisi_hba *hisi_hba)
}
}

-const char *
+static const char *
hisi_sas_debugfs_to_reg_name(int off, int base_off,
const struct hisi_sas_debugfs_reg_lu *lu)
{
@@ -2574,10 +2574,10 @@ static void hisi_sas_debugfs_print_reg(u32 *regs_val, const void *ptr,

if (name)
seq_printf(s, "0x%08x 0x%08x %s\n", off,
- le32_to_cpu(regs_val[i]), name);
+ regs_val[i], name);
else
seq_printf(s, "0x%08x 0x%08x\n", off,
- le32_to_cpu(regs_val[i]));
+ regs_val[i]);
}
}

@@ -2587,7 +2587,7 @@ static int hisi_sas_debugfs_global_show(struct seq_file *s, void *p)
const struct hisi_sas_hw *hw = hisi_hba->hw;
const struct hisi_sas_debugfs_reg *reg_global = hw->debugfs_reg_global;

- hisi_sas_debugfs_print_reg((u32 *)hisi_hba->debugfs_global_reg,
+ hisi_sas_debugfs_print_reg(hisi_hba->debugfs_global_reg,
reg_global, s);

return 0;
@@ -2634,7 +2634,7 @@ static int hisi_sas_debugfs_port_open(struct inode *inode, struct file *filp)
};

static int hisi_sas_show_row_64(struct seq_file *s, int index,
- int sz, u64 *ptr)
+ int sz, __le64 *ptr)
{
int i;

@@ -2652,7 +2652,7 @@ static int hisi_sas_show_row_64(struct seq_file *s, int index,
}

static int hisi_sas_show_row_32(struct seq_file *s, int index,
- int sz, u32 *ptr)
+ int sz, __le32 *ptr)
{
int i;

@@ -2672,7 +2672,7 @@ static int hisi_sas_cq_show_slot(struct seq_file *s, int slot, void *cq_ptr)
struct hisi_sas_cq *cq = cq_ptr;
struct hisi_hba *hisi_hba = cq->hisi_hba;
void *complete_queue = hisi_hba->debugfs_complete_hdr[cq->id];
- void *complete_hdr = complete_queue +
+ __le32 *complete_hdr = complete_queue +
(hisi_hba->hw->complete_hdr_size * slot);

return hisi_sas_show_row_32(s, slot,
@@ -2711,8 +2711,8 @@ static int hisi_sas_dq_show_slot(struct seq_file *s, int slot, void *dq_ptr)
struct hisi_sas_dq *dq = dq_ptr;
struct hisi_hba *hisi_hba = dq->hisi_hba;
void *cmd_queue = hisi_hba->debugfs_cmd_hdr[dq->id];
- void *cmd_hdr = cmd_queue +
- hisi_hba->hw->complete_hdr_size * slot;
+ __le32 *cmd_hdr = cmd_queue +
+ sizeof(struct hisi_sas_cmd_hdr) * slot;

return hisi_sas_show_row_32(s, slot, sizeof(struct hisi_sas_cmd_hdr),
cmd_hdr);
@@ -2748,10 +2748,11 @@ static int hisi_sas_debugfs_iost_show(struct seq_file *s, void *p)
struct hisi_hba *hisi_hba = s->private;
struct hisi_sas_iost *debugfs_iost = hisi_hba->debugfs_iost;
int i, ret, max_command_entries = hisi_hba->hw->max_command_entries;
+ __le64 *iost = &debugfs_iost->qw0;

for (i = 0; i < max_command_entries; i++, debugfs_iost++) {
ret = hisi_sas_show_row_64(s, i, sizeof(*debugfs_iost),
- (u64 *)debugfs_iost);
+ iost);
if (ret)
return ret;
}
--
1.9.1