Openmoko Bug #2349: Too high power consumption in 2.6.32

[Openmoko Public Trac]

#2349: Too high power consumption in 2.6.32
----------------------+-----------------------------------------------------
 Reporter:  Q-Master  |          Owner:  openmoko-kernel
     Type:  defect    |         Status:  new            
 Priority:  normal    |      Milestone:                 
Component:  kernel    |        Version:                 
 Severity:  major     |       Keywords:                 
 Haspatch:  0         |      Blockedby:                 
Estimated:            |    Patchreview:                 
 Blocking:            |   Reproducible:  always         
----------------------+-----------------------------------------------------

Comment(by lindi):

 radekp on IRC made the following analysis:

 {{{
 2.6.29
 ======

 138.9

                 [  822.405000] soc-audio soc-audio: preparing suspend ->
 133.9
 -5mA

                 [  891.945000] neo1973-pm-gsm neo1973-pm-gsm.0: suspend ->
 131.8
                 [  895.740000] s3c2440-ts s3c2440-ts: suspend
 -2mA

                 [  912.935000] generic-bl generic-bl.1: suspend -> 106.6
 -25mA

                 [  945.305000] platform glamo-2d.0: suspend -> 86.8
 -20mA

                 [ 1074.795000] s3c2440-usbgadget s3c2440-usbgadget:
 suspend -> 80.9
                 [ 1074.795000] gta02_udc_command S3C2410_UDC_P_DISABLE
 -6mA

                 [ 1091.810000] platform s3c2410-wdt: LATE suspend
                 [ 1091.810000] pm_counter 186
                 [ 1091.810000] s3c-ohci s3c-ohci: LATE suspend -> 9.4
 -71mA

 2.6.34
 ======

 124.9

                 [ 1293.525000] soc-audio soc-audio: preparing suspend ->
 119.6
 -5mA

                 [ 1541.720000] s3c24xx-ts s3c2440-ts: suspend -> 116.6
 -3mA

                 [ 1550.310000] spi_s3c24xx_gpio spi_s3c24xx_gpio.0:
 suspend -> 100.6
                 [ 1553.105000] glamo3362 glamo3362.0: suspend
 -16mA

                 [ 1886.550000] s3c2410-wdt s3c2410-wdt: LATE suspend ->
 30.2
                 [ 1889.345000] s3c2410-ohci s3c2410-ohci: LATE suspend
                 [ 1889.345000] PM: late suspend of devices complete after
 267905.559 msecs
 -70mA



 In 2.6.29 missing in 2.6.32
 ===========================

                 [  912.935000] generic-bl generic-bl.1: suspend -> 106.6
 -25mA

                 [ 1074.795000] s3c2440-usbgadget s3c2440-usbgadget:
 suspend -> 80.9
                 [ 1074.795000] gta02_udc_command S3C2410_UDC_P_DISABLE
 -6mA
 }}}

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2349#comment:5>
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