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platform/x86: intel/pmc: Remove unused param idx from pmc_for_each_mode()

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pmc_for_each_mode() takes i (index) variable name as a parameter but
the loop index is not used by any of the callers. Make the index
variable internal to pmc_for_each_mode().

This also changes the loop logic such that ->lpm_en_modes[] is never
read beyond num_lpm_modes.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20240806083047.1562-1-ilpo.jarvinen@linux.intel.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Ilpo Järvinen 2024-08-06 11:30:47 +03:00 committed by Hans de Goede
parent 6c1fa8edfe
commit e35ee8ee49
3 changed files with 15 additions and 17 deletions
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18
drivers/platform/x86/intel/pmc/core.c
View File

@ -728,12 +728,11 @@ static int pmc_core_substate_res_show(struct seq_file *s, void *unused)
struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN];
const int lpm_adj_x2 = pmc->map->lpm_res_counter_step_x2;
u32 offset = pmc->map->lpm_residency_offset;
unsigned int i;
int mode;
seq_printf(s, "%-10s %-15s\n", "Substate", "Residency");
pmc_for_each_mode(i, mode, pmcdev) {
pmc_for_each_mode(mode, pmcdev) {
seq_printf(s, "%-10s %-15llu\n", pmc_lpm_modes[mode],
adjust_lpm_residency(pmc, offset + (4 * mode), lpm_adj_x2));
}
@ -787,11 +786,10 @@ DEFINE_SHOW_ATTRIBUTE(pmc_core_substate_l_sts_regs);
static void pmc_core_substate_req_header_show(struct seq_file *s, int pmc_index)
{
struct pmc_dev *pmcdev = s->private;
unsigned int i;
int mode;
seq_printf(s, "%30s |", "Element");
pmc_for_each_mode(i, mode, pmcdev)
pmc_for_each_mode(mode, pmcdev)
seq_printf(s, " %9s |", pmc_lpm_modes[mode]);
seq_printf(s, " %9s |", "Status");
@ -837,14 +835,14 @@ static int pmc_core_substate_req_regs_show(struct seq_file *s, void *unused)
u32 lpm_status;
u32 lpm_status_live;
const struct pmc_bit_map *map;
int mode, idx, i, len = 32;
int mode, i, len = 32;
/*
* Capture the requirements and create a mask so that we only
* show an element if it's required for at least one of the
* enabled low power modes
*/
pmc_for_each_mode(idx, mode, pmcdev)
pmc_for_each_mode(mode, pmcdev)
req_mask |= lpm_req_regs[mp + (mode * num_maps)];
/* Get the last latched status for this map */
@ -870,7 +868,7 @@ static int pmc_core_substate_req_regs_show(struct seq_file *s, void *unused)
seq_printf(s, "pmc%d: %26s |", pmc_index, map[i].name);
/* Loop over the enabled states and display if required */
pmc_for_each_mode(idx, mode, pmcdev) {
pmc_for_each_mode(mode, pmcdev) {
bool required = lpm_req_regs[mp + (mode * num_maps)] &
bit_mask;
seq_printf(s, " %9s |", required ? "Required" : " ");
@ -935,7 +933,6 @@ static int pmc_core_lpm_latch_mode_show(struct seq_file *s, void *unused)
{
struct pmc_dev *pmcdev = s->private;
struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN];
unsigned int idx;
bool c10;
u32 reg;
int mode;
@ -949,7 +946,7 @@ static int pmc_core_lpm_latch_mode_show(struct seq_file *s, void *unused)
c10 = true;
}
pmc_for_each_mode(idx, mode, pmcdev) {
pmc_for_each_mode(mode, pmcdev) {
if ((BIT(mode) & reg) && !c10)
seq_printf(s, " [%s]", pmc_lpm_modes[mode]);
else
@ -970,7 +967,6 @@ static ssize_t pmc_core_lpm_latch_mode_write(struct file *file,
struct pmc *pmc = pmcdev->pmcs[PMC_IDX_MAIN];
bool clear = false, c10 = false;
unsigned char buf[8];
unsigned int idx;
int m, mode;
u32 reg;
@ -989,7 +985,7 @@ static ssize_t pmc_core_lpm_latch_mode_write(struct file *file,
mode = sysfs_match_string(pmc_lpm_modes, buf);
/* Check string matches enabled mode */
pmc_for_each_mode(idx, m, pmcdev)
pmc_for_each_mode(m, pmcdev)
if (mode == m)
break;

10
drivers/platform/x86/intel/pmc/core.h
View File

@ -604,10 +604,12 @@ int lnl_core_init(struct pmc_dev *pmcdev);
void cnl_suspend(struct pmc_dev *pmcdev);
int cnl_resume(struct pmc_dev *pmcdev);
#define pmc_for_each_mode(i, mode, pmcdev) \
for (i = 0, mode = pmcdev->lpm_en_modes[i]; \
i < pmcdev->num_lpm_modes; \
i++, mode = pmcdev->lpm_en_modes[i])
#define pmc_for_each_mode(mode, pmcdev) \
for (unsigned int __i = 0, __cond; \
__cond = __i < (pmcdev)->num_lpm_modes, \
__cond && ((mode) = (pmcdev)->lpm_en_modes[__i]), \
__cond; \
__i++)
#define DEFINE_PMC_CORE_ATTR_WRITE(__name) \
static int __name ## _open(struct inode *inode, struct file *file) \

4
drivers/platform/x86/intel/pmc/core_ssram.c
View File

@ -45,7 +45,7 @@ static int pmc_core_get_lpm_req(struct pmc_dev *pmcdev, struct pmc *pmc)
struct telem_endpoint *ep;
const u8 *lpm_indices;
int num_maps, mode_offset = 0;
int ret, mode, i;
int ret, mode;
int lpm_size;
u32 guid;
@ -116,7 +116,7 @@ static int pmc_core_get_lpm_req(struct pmc_dev *pmcdev, struct pmc *pmc)
*
*/
mode_offset = LPM_HEADER_OFFSET + LPM_MODE_OFFSET;
pmc_for_each_mode(i, mode, pmcdev) {
pmc_for_each_mode(mode, pmcdev) {
u32 *req_offset = pmc->lpm_req_regs + (mode * num_maps);
int m;