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Message-ID: <536FB2B8.1060505@semaphore.gr>
Date: Sun, 11 May 2014 20:26:16 +0300
From: Stratos Karafotis <stratosk@...aphore.gr>
To: "Rafael J. Wysocki" <rjw@...ysocki.net>,
Viresh Kumar <viresh.kumar@...aro.org>
CC: "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] cpufreq: powernow-k8: Suppress checkpatch warnings
Suppress the following checkpatch.pl warnings:
- WARNING: Prefer pr_err(... to printk(KERN_ERR ...
- WARNING: Prefer pr_info(... to printk(KERN_INFO ...
- WARNING: Prefer pr_warn(... to printk(KERN_WARNING ...
- WARNING: quoted string split across lines
- WARNING: please, no spaces at the start of a line
Also, define the pr_fmt macro instead of PFX for the module name.
Signed-off-by: Stratos Karafotis <stratosk@...aphore.gr>
---
Changes v1 -> v2
- Use pr_err_once instead of printk_once
- Change missing_pss_msg to macro (because pr_err_once
doesn't compile otherwise)
- Put one pr_err message in a single line instead of two
- Ignore "line over 80 characters" warnings
- Change the word "Fix" in the subject of the patch to
"Suppress" as the patch doesn't really fix anything
drivers/cpufreq/powernow-k8.c | 180 +++++++++++++++++-------------------------
drivers/cpufreq/powernow-k8.h | 2 +-
2 files changed, 74 insertions(+), 108 deletions(-)
diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c
index 1b6ae6b..f9ce7e4 100644
--- a/drivers/cpufreq/powernow-k8.c
+++ b/drivers/cpufreq/powernow-k8.c
@@ -27,6 +27,8 @@
* power and thermal data sheets, (e.g. 30417.pdf, 30430.pdf, 43375.pdf)
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/kernel.h>
#include <linux/smp.h>
#include <linux/module.h>
@@ -45,7 +47,6 @@
#include <linux/mutex.h>
#include <acpi/processor.h>
-#define PFX "powernow-k8: "
#define VERSION "version 2.20.00"
#include "powernow-k8.h"
@@ -161,7 +162,7 @@ static int write_new_fid(struct powernow_k8_data *data, u32 fid)
u32 i = 0;
if ((fid & INVALID_FID_MASK) || (data->currvid & INVALID_VID_MASK)) {
- printk(KERN_ERR PFX "internal error - overflow on fid write\n");
+ pr_err("internal error - overflow on fid write\n");
return 1;
}
@@ -175,9 +176,7 @@ static int write_new_fid(struct powernow_k8_data *data, u32 fid)
do {
wrmsr(MSR_FIDVID_CTL, lo, data->plllock * PLL_LOCK_CONVERSION);
if (i++ > 100) {
- printk(KERN_ERR PFX
- "Hardware error - pending bit very stuck - "
- "no further pstate changes possible\n");
+ pr_err("Hardware error - pending bit very stuck - no further pstate changes possible\n");
return 1;
}
} while (query_current_values_with_pending_wait(data));
@@ -185,15 +184,13 @@ static int write_new_fid(struct powernow_k8_data *data, u32 fid)
count_off_irt(data);
if (savevid != data->currvid) {
- printk(KERN_ERR PFX
- "vid change on fid trans, old 0x%x, new 0x%x\n",
- savevid, data->currvid);
+ pr_err("vid change on fid trans, old 0x%x, new 0x%x\n",
+ savevid, data->currvid);
return 1;
}
if (fid != data->currfid) {
- printk(KERN_ERR PFX
- "fid trans failed, fid 0x%x, curr 0x%x\n", fid,
+ pr_err("fid trans failed, fid 0x%x, curr 0x%x\n", fid,
data->currfid);
return 1;
}
@@ -209,7 +206,7 @@ static int write_new_vid(struct powernow_k8_data *data, u32 vid)
int i = 0;
if ((data->currfid & INVALID_FID_MASK) || (vid & INVALID_VID_MASK)) {
- printk(KERN_ERR PFX "internal error - overflow on vid write\n");
+ pr_err("internal error - overflow on vid write\n");
return 1;
}
@@ -223,23 +220,19 @@ static int write_new_vid(struct powernow_k8_data *data, u32 vid)
do {
wrmsr(MSR_FIDVID_CTL, lo, STOP_GRANT_5NS);
if (i++ > 100) {
- printk(KERN_ERR PFX "internal error - pending bit "
- "very stuck - no further pstate "
- "changes possible\n");
+ pr_err("internal error - pending bit very stuck - no further pstate changes possible\n");
return 1;
}
} while (query_current_values_with_pending_wait(data));
if (savefid != data->currfid) {
- printk(KERN_ERR PFX "fid changed on vid trans, old "
- "0x%x new 0x%x\n",
- savefid, data->currfid);
+ pr_err("fid changed on vid trans, old 0x%x new 0x%x\n",
+ savefid, data->currfid);
return 1;
}
if (vid != data->currvid) {
- printk(KERN_ERR PFX "vid trans failed, vid 0x%x, "
- "curr 0x%x\n",
+ pr_err("vid trans failed, vid 0x%x, curr 0x%x\n",
vid, data->currvid);
return 1;
}
@@ -283,8 +276,7 @@ static int transition_fid_vid(struct powernow_k8_data *data,
return 1;
if ((reqfid != data->currfid) || (reqvid != data->currvid)) {
- printk(KERN_ERR PFX "failed (cpu%d): req 0x%x 0x%x, "
- "curr 0x%x 0x%x\n",
+ pr_err("failed (cpu%d): req 0x%x 0x%x, curr 0x%x 0x%x\n",
smp_processor_id(),
reqfid, reqvid, data->currfid, data->currvid);
return 1;
@@ -304,8 +296,7 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data,
u32 savefid = data->currfid;
u32 maxvid, lo, rvomult = 1;
- pr_debug("ph1 (cpu%d): start, currfid 0x%x, currvid 0x%x, "
- "reqvid 0x%x, rvo 0x%x\n",
+ pr_debug("ph1 (cpu%d): start, currfid 0x%x, currvid 0x%x, reqvid 0x%x, rvo 0x%x\n",
smp_processor_id(),
data->currfid, data->currvid, reqvid, data->rvo);
@@ -342,8 +333,7 @@ static int core_voltage_pre_transition(struct powernow_k8_data *data,
return 1;
if (savefid != data->currfid) {
- printk(KERN_ERR PFX "ph1 err, currfid changed 0x%x\n",
- data->currfid);
+ pr_err("ph1 err, currfid changed 0x%x\n", data->currfid);
return 1;
}
@@ -360,13 +350,11 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid)
u32 fid_interval, savevid = data->currvid;
if (data->currfid == reqfid) {
- printk(KERN_ERR PFX "ph2 null fid transition 0x%x\n",
- data->currfid);
+ pr_err("ph2 null fid transition 0x%x\n", data->currfid);
return 0;
}
- pr_debug("ph2 (cpu%d): starting, currfid 0x%x, currvid 0x%x, "
- "reqfid 0x%x\n",
+ pr_debug("ph2 (cpu%d): starting, currfid 0x%x, currvid 0x%x, reqfid 0x%x\n",
smp_processor_id(),
data->currfid, data->currvid, reqfid);
@@ -409,15 +397,13 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid)
return 1;
if (data->currfid != reqfid) {
- printk(KERN_ERR PFX
- "ph2: mismatch, failed fid transition, "
- "curr 0x%x, req 0x%x\n",
+ pr_err("ph2: mismatch, failed fid transition, curr 0x%x, req 0x%x\n",
data->currfid, reqfid);
return 1;
}
if (savevid != data->currvid) {
- printk(KERN_ERR PFX "ph2: vid changed, save 0x%x, curr 0x%x\n",
+ pr_err("ph2: vid changed, save 0x%x, curr 0x%x\n",
savevid, data->currvid);
return 1;
}
@@ -444,17 +430,14 @@ static int core_voltage_post_transition(struct powernow_k8_data *data,
return 1;
if (savefid != data->currfid) {
- printk(KERN_ERR PFX
- "ph3: bad fid change, save 0x%x, curr 0x%x\n",
- savefid, data->currfid);
+ pr_err("ph3: bad fid change, save 0x%x, curr 0x%x\n",
+ savefid, data->currfid);
return 1;
}
if (data->currvid != reqvid) {
- printk(KERN_ERR PFX
- "ph3: failed vid transition\n, "
- "req 0x%x, curr 0x%x",
- reqvid, data->currvid);
+ pr_err("ph3: failed vid transition\n, req 0x%x, curr 0x%x",
+ reqvid, data->currvid);
return 1;
}
}
@@ -498,23 +481,20 @@ static void check_supported_cpu(void *_rc)
if ((eax & CPUID_XFAM) == CPUID_XFAM_K8) {
if (((eax & CPUID_USE_XFAM_XMOD) != CPUID_USE_XFAM_XMOD) ||
((eax & CPUID_XMOD) > CPUID_XMOD_REV_MASK)) {
- printk(KERN_INFO PFX
- "Processor cpuid %x not supported\n", eax);
+ pr_info("Processor cpuid %x not supported\n", eax);
return;
}
eax = cpuid_eax(CPUID_GET_MAX_CAPABILITIES);
if (eax < CPUID_FREQ_VOLT_CAPABILITIES) {
- printk(KERN_INFO PFX
- "No frequency change capabilities detected\n");
+ pr_info("No frequency change capabilities detected\n");
return;
}
cpuid(CPUID_FREQ_VOLT_CAPABILITIES, &eax, &ebx, &ecx, &edx);
if ((edx & P_STATE_TRANSITION_CAPABLE)
!= P_STATE_TRANSITION_CAPABLE) {
- printk(KERN_INFO PFX
- "Power state transitions not supported\n");
+ pr_info("Power state transitions not supported\n");
return;
}
*rc = 0;
@@ -529,43 +509,39 @@ static int check_pst_table(struct powernow_k8_data *data, struct pst_s *pst,
for (j = 0; j < data->numps; j++) {
if (pst[j].vid > LEAST_VID) {
- printk(KERN_ERR FW_BUG PFX "vid %d invalid : 0x%x\n",
- j, pst[j].vid);
+ pr_err(FW_BUG "vid %d invalid : 0x%x\n", j,
+ pst[j].vid);
return -EINVAL;
}
if (pst[j].vid < data->rvo) {
/* vid + rvo >= 0 */
- printk(KERN_ERR FW_BUG PFX "0 vid exceeded with pstate"
- " %d\n", j);
+ pr_err(FW_BUG "0 vid exceeded with pstate %d\n", j);
return -ENODEV;
}
if (pst[j].vid < maxvid + data->rvo) {
/* vid + rvo >= maxvid */
- printk(KERN_ERR FW_BUG PFX "maxvid exceeded with pstate"
- " %d\n", j);
+ pr_err(FW_BUG "maxvid exceeded with pstate %d\n", j);
return -ENODEV;
}
if (pst[j].fid > MAX_FID) {
- printk(KERN_ERR FW_BUG PFX "maxfid exceeded with pstate"
- " %d\n", j);
+ pr_err(FW_BUG "maxfid exceeded with pstate %d\n", j);
return -ENODEV;
}
if (j && (pst[j].fid < HI_FID_TABLE_BOTTOM)) {
/* Only first fid is allowed to be in "low" range */
- printk(KERN_ERR FW_BUG PFX "two low fids - %d : "
- "0x%x\n", j, pst[j].fid);
+ pr_err(FW_BUG "two low fids - %d : 0x%x\n", j,
+ pst[j].fid);
return -EINVAL;
}
if (pst[j].fid < lastfid)
lastfid = pst[j].fid;
}
if (lastfid & 1) {
- printk(KERN_ERR FW_BUG PFX "lastfid invalid\n");
+ pr_err(FW_BUG "lastfid invalid\n");
return -EINVAL;
}
if (lastfid > LO_FID_TABLE_TOP)
- printk(KERN_INFO FW_BUG PFX
- "first fid not from lo freq table\n");
+ pr_info(FW_BUG "first fid not from lo freq table\n");
return 0;
}
@@ -582,16 +558,14 @@ static void print_basics(struct powernow_k8_data *data)
for (j = 0; j < data->numps; j++) {
if (data->powernow_table[j].frequency !=
CPUFREQ_ENTRY_INVALID) {
- printk(KERN_INFO PFX
- "fid 0x%x (%d MHz), vid 0x%x\n",
- data->powernow_table[j].driver_data & 0xff,
- data->powernow_table[j].frequency/1000,
- data->powernow_table[j].driver_data >> 8);
+ pr_info("fid 0x%x (%d MHz), vid 0x%x\n",
+ data->powernow_table[j].driver_data & 0xff,
+ data->powernow_table[j].frequency/1000,
+ data->powernow_table[j].driver_data >> 8);
}
}
if (data->batps)
- printk(KERN_INFO PFX "Only %d pstates on battery\n",
- data->batps);
+ pr_info("Only %d pstates on battery\n", data->batps);
}
static int fill_powernow_table(struct powernow_k8_data *data,
@@ -602,21 +576,20 @@ static int fill_powernow_table(struct powernow_k8_data *data,
if (data->batps) {
/* use ACPI support to get full speed on mains power */
- printk(KERN_WARNING PFX
- "Only %d pstates usable (use ACPI driver for full "
- "range\n", data->batps);
+ pr_warn("Only %d pstates usable (use ACPI driver for full range\n",
+ data->batps);
data->numps = data->batps;
}
for (j = 1; j < data->numps; j++) {
if (pst[j-1].fid >= pst[j].fid) {
- printk(KERN_ERR PFX "PST out of sequence\n");
+ pr_err("PST out of sequence\n");
return -EINVAL;
}
}
if (data->numps < 2) {
- printk(KERN_ERR PFX "no p states to transition\n");
+ pr_err("no p states to transition\n");
return -ENODEV;
}
@@ -626,7 +599,7 @@ static int fill_powernow_table(struct powernow_k8_data *data,
powernow_table = kzalloc((sizeof(*powernow_table)
* (data->numps + 1)), GFP_KERNEL);
if (!powernow_table) {
- printk(KERN_ERR PFX "powernow_table memory alloc failure\n");
+ pr_err("powernow_table memory alloc failure\n");
return -ENOMEM;
}
@@ -681,13 +654,13 @@ static int find_psb_table(struct powernow_k8_data *data)
pr_debug("table vers: 0x%x\n", psb->tableversion);
if (psb->tableversion != PSB_VERSION_1_4) {
- printk(KERN_ERR FW_BUG PFX "PSB table is not v1.4\n");
+ pr_err(FW_BUG "PSB table is not v1.4\n");
return -ENODEV;
}
pr_debug("flags: 0x%x\n", psb->flags1);
if (psb->flags1) {
- printk(KERN_ERR FW_BUG PFX "unknown flags\n");
+ pr_err(FW_BUG "unknown flags\n");
return -ENODEV;
}
@@ -716,7 +689,7 @@ static int find_psb_table(struct powernow_k8_data *data)
cpst = 1;
}
if (cpst != 1) {
- printk(KERN_ERR FW_BUG PFX "numpst must be 1\n");
+ pr_err(FW_BUG "numpst must be 1\n");
return -ENODEV;
}
@@ -742,9 +715,8 @@ static int find_psb_table(struct powernow_k8_data *data)
* BIOS and Kernel Developer's Guide, which is available on
* www.amd.com
*/
- printk(KERN_ERR FW_BUG PFX "No PSB or ACPI _PSS objects\n");
- printk(KERN_ERR PFX "Make sure that your BIOS is up to date"
- " and Cool'N'Quiet support is enabled in BIOS setup\n");
+ pr_err(FW_BUG "No PSB or ACPI _PSS objects\n");
+ pr_err("Make sure that your BIOS is up to date and Cool'N'Quiet support is enabled in BIOS setup\n");
return -ENODEV;
}
@@ -819,8 +791,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
acpi_processor_notify_smm(THIS_MODULE);
if (!zalloc_cpumask_var(&data->acpi_data.shared_cpu_map, GFP_KERNEL)) {
- printk(KERN_ERR PFX
- "unable to alloc powernow_k8_data cpumask\n");
+ pr_err("unable to alloc powernow_k8_data cpumask\n");
ret_val = -ENOMEM;
goto err_out_mem;
}
@@ -885,9 +856,8 @@ static int fill_powernow_table_fidvid(struct powernow_k8_data *data,
}
if (freq != (data->acpi_data.states[i].core_frequency * 1000)) {
- printk(KERN_INFO PFX "invalid freq entries "
- "%u kHz vs. %u kHz\n", freq,
- (unsigned int)
+ pr_info("invalid freq entries %u kHz vs. %u kHz\n",
+ freq, (unsigned int)
(data->acpi_data.states[i].core_frequency
* 1000));
invalidate_entry(powernow_table, i);
@@ -916,7 +886,7 @@ static int get_transition_latency(struct powernow_k8_data *data)
max_latency = cur_latency;
}
if (max_latency == 0) {
- pr_err(FW_WARN PFX "Invalid zero transition latency\n");
+ pr_err(FW_WARN "Invalid zero transition latency\n");
max_latency = 1;
}
/* value in usecs, needs to be in nanoseconds */
@@ -991,7 +961,7 @@ static long powernowk8_target_fn(void *arg)
checkvid = data->currvid;
if (pending_bit_stuck()) {
- printk(KERN_ERR PFX "failing targ, change pending bit set\n");
+ pr_err("failing targ, change pending bit set\n");
return -EIO;
}
@@ -1003,12 +973,11 @@ static long powernowk8_target_fn(void *arg)
return -EIO;
pr_debug("targ: curr fid 0x%x, vid 0x%x\n",
- data->currfid, data->currvid);
+ data->currfid, data->currvid);
if ((checkvid != data->currvid) ||
(checkfid != data->currfid)) {
- pr_info(PFX
- "error - out of sync, fix 0x%x 0x%x, vid 0x%x 0x%x\n",
+ pr_info("error - out of sync, fix 0x%x 0x%x, vid 0x%x 0x%x\n",
checkfid, data->currfid,
checkvid, data->currvid);
}
@@ -1020,7 +989,7 @@ static long powernowk8_target_fn(void *arg)
ret = transition_frequency_fidvid(data, newstate);
if (ret) {
- printk(KERN_ERR PFX "transition frequency failed\n");
+ pr_err("transition frequency failed\n");
mutex_unlock(&fidvid_mutex);
return 1;
}
@@ -1049,7 +1018,7 @@ static void powernowk8_cpu_init_on_cpu(void *_init_on_cpu)
struct init_on_cpu *init_on_cpu = _init_on_cpu;
if (pending_bit_stuck()) {
- printk(KERN_ERR PFX "failing init, change pending bit set\n");
+ pr_err("failing init, change pending bit set\n");
init_on_cpu->rc = -ENODEV;
return;
}
@@ -1064,11 +1033,10 @@ static void powernowk8_cpu_init_on_cpu(void *_init_on_cpu)
init_on_cpu->rc = 0;
}
-static const char missing_pss_msg[] =
- KERN_ERR
- FW_BUG PFX "No compatible ACPI _PSS objects found.\n"
- FW_BUG PFX "First, make sure Cool'N'Quiet is enabled in the BIOS.\n"
- FW_BUG PFX "If that doesn't help, try upgrading your BIOS.\n";
+#define MISSING_PSS_MSG \
+ FW_BUG "No compatible ACPI _PSS objects found.\n" \
+ FW_BUG "First, make sure Cool'N'Quiet is enabled in the BIOS.\n" \
+ FW_BUG "If that doesn't help, try upgrading your BIOS.\n"
/* per CPU init entry point to the driver */
static int powernowk8_cpu_init(struct cpufreq_policy *pol)
@@ -1083,7 +1051,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
data = kzalloc(sizeof(*data), GFP_KERNEL);
if (!data) {
- printk(KERN_ERR PFX "unable to alloc powernow_k8_data");
+ pr_err("unable to alloc powernow_k8_data");
return -ENOMEM;
}
@@ -1095,13 +1063,11 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
* an UP version, and is deprecated by AMD.
*/
if (num_online_cpus() != 1) {
- printk_once(missing_pss_msg);
+ pr_err_once(MISSING_PSS_MSG);
goto err_out;
}
if (pol->cpu != 0) {
- printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
- "CPU other than CPU0. Complain to your BIOS "
- "vendor.\n");
+ pr_err(FW_BUG "No ACPI _PSS objects for CPU other than CPU0. Complain to your BIOS vendor.\n");
goto err_out;
}
rc = find_psb_table(data);
@@ -1129,7 +1095,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
/* min/max the cpu is capable of */
if (cpufreq_table_validate_and_show(pol, data->powernow_table)) {
- printk(KERN_ERR FW_BUG PFX "invalid powernow_table\n");
+ pr_err(FW_BUG "invalid powernow_table\n");
powernow_k8_cpu_exit_acpi(data);
kfree(data->powernow_table);
kfree(data);
@@ -1137,7 +1103,7 @@ static int powernowk8_cpu_init(struct cpufreq_policy *pol)
}
pr_debug("cpu_init done, current fid 0x%x, vid 0x%x\n",
- data->currfid, data->currvid);
+ data->currfid, data->currvid);
/* Point all the CPUs in this policy to the same data */
for_each_cpu(cpu, pol->cpus)
@@ -1220,12 +1186,12 @@ static void __request_acpi_cpufreq(void)
goto request;
if (strncmp(cur_drv, drv, min_t(size_t, strlen(cur_drv), strlen(drv))))
- pr_warn(PFX "WTF driver: %s\n", cur_drv);
+ pr_warn("WTF driver: %s\n", cur_drv);
return;
request:
- pr_warn(PFX "This CPU is not supported anymore, using acpi-cpufreq instead.\n");
+ pr_warn("This CPU is not supported anymore, using acpi-cpufreq instead.\n");
request_module(drv);
}
@@ -1260,7 +1226,7 @@ static int powernowk8_init(void)
if (ret)
return ret;
- pr_info(PFX "Found %d %s (%d cpu cores) (" VERSION ")\n",
+ pr_info("Found %d %s (%d cpu cores) (" VERSION ")\n",
num_online_nodes(), boot_cpu_data.x86_model_id, supported_cpus);
return ret;
@@ -1274,8 +1240,8 @@ static void __exit powernowk8_exit(void)
cpufreq_unregister_driver(&cpufreq_amd64_driver);
}
-MODULE_AUTHOR("Paul Devriendt <paul.devriendt@....com> and "
- "Mark Langsdorf <mark.langsdorf@....com>");
+MODULE_AUTHOR("Paul Devriendt <paul.devriendt@....com>");
+MODULE_AUTHOR("Mark Langsdorf <mark.langsdorf@....com>");
MODULE_DESCRIPTION("AMD Athlon 64 and Opteron processor frequency driver.");
MODULE_LICENSE("GPL");
diff --git a/drivers/cpufreq/powernow-k8.h b/drivers/cpufreq/powernow-k8.h
index 79329d4..45ce11e 100644
--- a/drivers/cpufreq/powernow-k8.h
+++ b/drivers/cpufreq/powernow-k8.h
@@ -19,7 +19,7 @@ struct powernow_k8_data {
u32 vidmvs; /* usable value calculated from mvs */
u32 vstable; /* voltage stabilization time, units 20 us */
u32 plllock; /* pll lock time, units 1 us */
- u32 exttype; /* extended interface = 1 */
+ u32 exttype; /* extended interface = 1 */
/* keep track of the current fid / vid or pstate */
u32 currvid;
--
1.9.0
--
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