diff options
author | David S. Miller <davem@davemloft.net> | 2008-10-01 09:12:56 -0400 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2008-10-01 09:12:56 -0400 |
commit | b262e60309e1b0eb25d300c7e739427d5316abb1 (patch) | |
tree | bf319d78c79bb5cb617ff0c8340c73aa349bba15 /drivers/clocksource | |
parent | 93c8b90f01f0dc73891da4e84b26524b61d29d66 (diff) | |
parent | 0523820482dcb42784572ffd2296c2f08c275a2b (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Conflicts:
drivers/net/wireless/ath9k/core.c
drivers/net/wireless/ath9k/main.c
net/core/dev.c
Diffstat (limited to 'drivers/clocksource')
-rw-r--r-- | drivers/clocksource/acpi_pm.c | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/clocksource/acpi_pm.c b/drivers/clocksource/acpi_pm.c index 4eee533f3f4a..71d2ac4e3f46 100644 --- a/drivers/clocksource/acpi_pm.c +++ b/drivers/clocksource/acpi_pm.c | |||
@@ -178,11 +178,13 @@ static int verify_pmtmr_rate(void) | |||
178 | 178 | ||
179 | /* Number of monotonicity checks to perform during initialization */ | 179 | /* Number of monotonicity checks to perform during initialization */ |
180 | #define ACPI_PM_MONOTONICITY_CHECKS 10 | 180 | #define ACPI_PM_MONOTONICITY_CHECKS 10 |
181 | /* Number of reads we try to get two different values */ | ||
182 | #define ACPI_PM_READ_CHECKS 10000 | ||
181 | 183 | ||
182 | static int __init init_acpi_pm_clocksource(void) | 184 | static int __init init_acpi_pm_clocksource(void) |
183 | { | 185 | { |
184 | cycle_t value1, value2; | 186 | cycle_t value1, value2; |
185 | unsigned int i, j, good = 0; | 187 | unsigned int i, j = 0; |
186 | 188 | ||
187 | if (!pmtmr_ioport) | 189 | if (!pmtmr_ioport) |
188 | return -ENODEV; | 190 | return -ENODEV; |
@@ -192,29 +194,26 @@ static int __init init_acpi_pm_clocksource(void) | |||
192 | 194 | ||
193 | /* "verify" this timing source: */ | 195 | /* "verify" this timing source: */ |
194 | for (j = 0; j < ACPI_PM_MONOTONICITY_CHECKS; j++) { | 196 | for (j = 0; j < ACPI_PM_MONOTONICITY_CHECKS; j++) { |
197 | udelay(100 * j); | ||
195 | value1 = clocksource_acpi_pm.read(); | 198 | value1 = clocksource_acpi_pm.read(); |
196 | for (i = 0; i < 10000; i++) { | 199 | for (i = 0; i < ACPI_PM_READ_CHECKS; i++) { |
197 | value2 = clocksource_acpi_pm.read(); | 200 | value2 = clocksource_acpi_pm.read(); |
198 | if (value2 == value1) | 201 | if (value2 == value1) |
199 | continue; | 202 | continue; |
200 | if (value2 > value1) | 203 | if (value2 > value1) |
201 | good++; | ||
202 | break; | 204 | break; |
203 | if ((value2 < value1) && ((value2) < 0xFFF)) | 205 | if ((value2 < value1) && ((value2) < 0xFFF)) |
204 | good++; | ||
205 | break; | 206 | break; |
206 | printk(KERN_INFO "PM-Timer had inconsistent results:" | 207 | printk(KERN_INFO "PM-Timer had inconsistent results:" |
207 | " 0x%#llx, 0x%#llx - aborting.\n", | 208 | " 0x%#llx, 0x%#llx - aborting.\n", |
208 | value1, value2); | 209 | value1, value2); |
209 | return -EINVAL; | 210 | return -EINVAL; |
210 | } | 211 | } |
211 | udelay(300 * i); | 212 | if (i == ACPI_PM_READ_CHECKS) { |
212 | } | 213 | printk(KERN_INFO "PM-Timer failed consistency check " |
213 | 214 | " (0x%#llx) - aborting.\n", value1); | |
214 | if (good != ACPI_PM_MONOTONICITY_CHECKS) { | 215 | return -ENODEV; |
215 | printk(KERN_INFO "PM-Timer failed consistency check " | 216 | } |
216 | " (0x%#llx) - aborting.\n", value1); | ||
217 | return -ENODEV; | ||
218 | } | 217 | } |
219 | 218 | ||
220 | if (verify_pmtmr_rate() != 0) | 219 | if (verify_pmtmr_rate() != 0) |