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Message-ID: <b6a2187b0906271109q2194cadbv8d20b4bda82bde19@mail.gmail.com>
Date: Sun, 28 Jun 2009 02:09:46 +0800
From: Jeff Chua <jeff.chua.linux@...il.com>
To: Etienne Basset <etienne.basset@...ericable.fr>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
davem@...emloft.net,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: [REGRESSION] 2.6.29=>2.6.30 suspend to ram regression (IDE
related)
On Sat, Jun 27, 2009 at 5:04 PM, Etienne
Basset<etienne.basset@...ericable.fr> wrote:
>>> kernel v2.6.29 suspends to RAM reliably on my computer; v2.6.30 doesn't resume after STR
Same problem on Thinkpad X61. STD STR suspended ok. Upon resume,
everything "seems" fine for about 100 seconds. Then mouse, keyboard
frozen.
>>> I tried also 2.6.31-rc1 doesn't work either
>>> etienne@...enne-desktop:~/linux-2.6$ git bisect bad
>>> 2f0d0fd2a605666d38e290c5c0d2907484352dc4 is first bad commit
>>
>> Does the following patch fix it?
> Yes, it works now
Works for me too with the patch.
Thanks,
Jeff.
>> ---
>> drivers/ide/ide-acpi.c | 37 +++++++------------------------------
>> drivers/ide/ide-pm.c | 30 ++++++++++++++++++------------
>> include/linux/ide.h | 2 ++
>> 3 files changed, 27 insertions(+), 42 deletions(-)
>>
>> Index: b/drivers/ide/ide-acpi.c
>> ===================================================================
>> --- a/drivers/ide/ide-acpi.ch
>> +++ b/drivers/ide/ide-acpi.c
>> @@ -92,6 +92,11 @@ int ide_acpi_init(void)
>> return 0;
>> }
>>
>> +bool ide_port_acpi(ide_hwif_t *hwif)
>> +{
>> + return ide_noacpi == 0 && hwif->acpidata;
>> +}
>> +
>> /**
>> * ide_get_dev_handle - finds acpi_handle and PCI device.function
>> * @dev: device to locate
>> @@ -352,9 +357,6 @@ int ide_acpi_exec_tfs(ide_drive_t *drive
>> unsigned long gtf_address;
>> unsigned long obj_loc;
>>
>> - if (ide_noacpi)
>> - return 0;
>> -
>> DEBPRINT("call get_GTF, drive=%s port=%d\n", drive->name, drive->dn);
>>
>> ret = do_drive_get_GTF(drive, >f_length, >f_address, &obj_loc);
>> @@ -389,16 +391,6 @@ void ide_acpi_get_timing(ide_hwif_t *hwi
>> struct acpi_buffer output;
>> union acpi_object *out_obj;
>>
>> - if (ide_noacpi)
>> - return;
>> -
>> - DEBPRINT("ENTER:\n");
>> -
>> - if (!hwif->acpidata) {
>> - DEBPRINT("no ACPI data for %s\n", hwif->name);
>> - return;
>> - }
>> -
>> /* Setting up output buffer for _GTM */
>> output.length = ACPI_ALLOCATE_BUFFER;
>> output.pointer = NULL; /* ACPI-CA sets this; save/free it later */
>> @@ -479,16 +471,6 @@ void ide_acpi_push_timing(ide_hwif_t *hw
>> struct ide_acpi_drive_link *master = &hwif->acpidata->master;
>> struct ide_acpi_drive_link *slave = &hwif->acpidata->slave;
>>
>> - if (ide_noacpi)
>> - return;
>> -
>> - DEBPRINT("ENTER:\n");
>> -
>> - if (!hwif->acpidata) {
>> - DEBPRINT("no ACPI data for %s\n", hwif->name);
>> - return;
>> - }
>> -
>> /* Give the GTM buffer + drive Identify data to the channel via the
>> * _STM method: */
>> /* setup input parameters buffer for _STM */
>> @@ -527,16 +509,11 @@ void ide_acpi_set_state(ide_hwif_t *hwif
>> ide_drive_t *drive;
>> int i;
>>
>> - if (ide_noacpi || ide_noacpi_psx)
>> + if (ide_noacpi_psx)
>> return;
>>
>> DEBPRINT("ENTER:\n");
>>
>> - if (!hwif->acpidata) {
>> - DEBPRINT("no ACPI data for %s\n", hwif->name);
>> - return;
>> - }
>> -
>> /* channel first and then drives for power on and verse versa for power off */
>> if (on)
>> acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);
>> @@ -616,7 +593,7 @@ void ide_acpi_port_init_devices(ide_hwif
>> drive->name, err);
>> }
>>
>> - if (!ide_acpionboot) {
>> + if (ide_noacpi || ide_acpionboot == 0) {
>> DEBPRINT("ACPI methods disabled on boot\n");
>> return;
>> }
>> Index: b/drivers/ide/ide-pm.c
>> ===================================================================
>> --- a/drivers/ide/ide-pm.c
>> +++ b/drivers/ide/ide-pm.c
>> @@ -10,9 +10,11 @@ int generic_ide_suspend(struct device *d
>> struct request_pm_state rqpm;
>> int ret;
>>
>> - /* call ACPI _GTM only once */
>> - if ((drive->dn & 1) == 0 || pair == NULL)
>> - ide_acpi_get_timing(hwif);
>> + if (ide_port_acpi(hwif)) {
>> + /* call ACPI _GTM only once */
>> + if ((drive->dn & 1) == 0 || pair == NULL)
>> + ide_acpi_get_timing(hwif);
>> + }
>>
>> memset(&rqpm, 0, sizeof(rqpm));
>> rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
>> @@ -26,9 +28,11 @@ int generic_ide_suspend(struct device *d
>> ret = blk_execute_rq(drive->queue, NULL, rq, 0);
>> blk_put_request(rq);
>>
>> - /* call ACPI _PS3 only after both devices are suspended */
>> - if (ret == 0 && ((drive->dn & 1) || pair == NULL))
>> - ide_acpi_set_state(hwif, 0);
>> + if (ret == 0 && ide_port_acpi(hwif)) {
>> + /* call ACPI _PS3 only after both devices are suspended */
>> + if ((drive->dn & 1) || pair == NULL)
>> + ide_acpi_set_state(hwif, 0);
>> + }
>>
>> return ret;
>> }
>> @@ -42,13 +46,15 @@ int generic_ide_resume(struct device *de
>> struct request_pm_state rqpm;
>> int err;
>>
>> - /* call ACPI _PS0 / _STM only once */
>> - if ((drive->dn & 1) == 0 || pair == NULL) {
>> - ide_acpi_set_state(hwif, 1);
>> - ide_acpi_push_timing(hwif);
>> - }
>> + if (ide_port_acpi(hwif)) {
>> + /* call ACPI _PS0 / _STM only once */
>> + if ((drive->dn & 1) == 0 || pair == NULL) {
>> + ide_acpi_set_state(hwif, 1);
>> + ide_acpi_push_timing(hwif);
>> + }
>>
>> - ide_acpi_exec_tfs(drive);
>> + ide_acpi_exec_tfs(drive);
>> + }
>>
>> memset(&rqpm, 0, sizeof(rqpm));
>> rq = blk_get_request(drive->queue, READ, __GFP_WAIT);
>> Index: b/include/linux/ide.h
>> ===================================================================
>> --- a/include/linux/ide.h
>> +++ b/include/linux/ide.h
>> @@ -1420,6 +1420,7 @@ static inline void ide_dma_unmap_sg(ide_
>>
>> #ifdef CONFIG_BLK_DEV_IDEACPI
>> int ide_acpi_init(void);
>> +bool ide_port_acpi(ide_hwif_t *hwif);
>> extern int ide_acpi_exec_tfs(ide_drive_t *drive);
>> extern void ide_acpi_get_timing(ide_hwif_t *hwif);
>> extern void ide_acpi_push_timing(ide_hwif_t *hwif);
>> @@ -1428,6 +1429,7 @@ void ide_acpi_port_init_devices(ide_hwif
>> extern void ide_acpi_set_state(ide_hwif_t *hwif, int on);
>> #else
>> static inline int ide_acpi_init(void) { return 0; }
>> +static inline bool ide_port_acpi(ide_hwif_t *hwif) { return 0; }
>> static inline int ide_acpi_exec_tfs(ide_drive_t *drive) { return 0; }
>> static inline void ide_acpi_get_timing(ide_hwif_t *hwif) { ; }
>> static inline void ide_acpi_push_timing(ide_hwif_t *hwif) { ; }
--
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