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From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 11/15] ide: make ide_hwif_t.ide_dma_{host_off,off_quietly} void
Date: Fri, 02 Feb 2007 23:39:36 +0100	[thread overview]
Message-ID: <45C3BDA8.8040201@gmail.com> (raw)
In-Reply-To: <58cb370e0702021206h205ff983r88fb4bdbea42ed9f@mail.gmail.com>


Sergei Shtylyov wrote:
> 
> Hello again. :-)
> 
> Bartlomiej Zolnierkiewicz wrote:
> 
>> [PATCH] ide: make ide_hwif_t.ide_dma_{host_off,off_quietly} void
> 
>    Below are my nits on the patch itself, and the code it changes.
> 
>> Index: b/drivers/ide/pci/atiixp.c
>> ===================================================================
>> --- a/drivers/ide/pci/atiixp.c
>> +++ b/drivers/ide/pci/atiixp.c
>> @@ -121,7 +121,7 @@ static int atiixp_ide_dma_host_on(ide_dr
>>       return __ide_dma_host_on(drive);
>>  }
>>
>> -static int atiixp_ide_dma_host_off(ide_drive_t *drive)
>> +static void atiixp_ide_dma_host_off(ide_drive_t *drive)
>>  {
>>       struct pci_dev *dev = drive->hwif->pci_dev;
>>       unsigned long flags;
> [...]
>> @@ -306,7 +306,7 @@ static void __devinit init_hwif_atiixp(i
>>               hwif->udma_four = 0;
>>
>>       hwif->ide_dma_host_on = &atiixp_ide_dma_host_on;
>> -     hwif->ide_dma_host_off = &atiixp_ide_dma_host_off;
>> +     hwif->dma_host_off = &atiixp_ide_dma_host_off;
>>       hwif->ide_dma_check = &atiixp_dma_check;
>>       if (!noautodma)
>>               hwif->autodma = 1;
> 
>    Would seem logical to get rid of ide_ in the function's name also...

done

>> Index: b/drivers/ide/pci/sgiioc4.c
>> ===================================================================
>> --- a/drivers/ide/pci/sgiioc4.c
>> +++ b/drivers/ide/pci/sgiioc4.c
>> @@ -282,12 +282,11 @@ sgiioc4_ide_dma_on(ide_drive_t * drive)
>>       return HWIF(drive)->ide_dma_host_on(drive);
>>  }
>>
>> -static int
>> -sgiioc4_ide_dma_off_quietly(ide_drive_t * drive)
>> +static void sgiioc4_ide_dma_off_quietly(ide_drive_t *drive)
>>  {
>>       drive->using_dma = 0;
>>
>> -     return HWIF(drive)->ide_dma_host_off(drive);
>> +     drive->hwif->dma_host_off(drive);
>>  }
>>
>>  static int sgiioc4_ide_dma_check(ide_drive_t *drive)
>> @@ -317,12 +316,9 @@ sgiioc4_ide_dma_host_on(ide_drive_t * dr
>>       return 1;
>>  }
>>
>> -static int
>> -sgiioc4_ide_dma_host_off(ide_drive_t * drive)
>> +static void sgiioc4_ide_dma_host_off(ide_drive_t * drive)
>>  {
>>       sgiioc4_clearirq(drive);
>> -
>> -     return 0;
>>  }
>>
>>  static int
>> @@ -612,10 +608,10 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
>>       hwif->ide_dma_end = &sgiioc4_ide_dma_end;
>>       hwif->ide_dma_check = &sgiioc4_ide_dma_check;
>>       hwif->ide_dma_on = &sgiioc4_ide_dma_on;
>> -     hwif->ide_dma_off_quietly = &sgiioc4_ide_dma_off_quietly;
>> +     hwif->dma_off_quietly = &sgiioc4_ide_dma_off_quietly;
>>       hwif->ide_dma_test_irq = &sgiioc4_ide_dma_test_irq;
>>       hwif->ide_dma_host_on = &sgiioc4_ide_dma_host_on;
>> -     hwif->ide_dma_host_off = &sgiioc4_ide_dma_host_off;
>> +     hwif->dma_host_off = &sgiioc4_ide_dma_host_off;
>>       hwif->ide_dma_lostirq = &sgiioc4_ide_dma_lostirq;
>>       hwif->ide_dma_timeout = &__ide_dma_timeout;
> 
>    The same here...

done

>> Index: b/drivers/ide/pci/sl82c105.c
>> ===================================================================
>> --- a/drivers/ide/pci/sl82c105.c
>> +++ b/drivers/ide/pci/sl82c105.c
>> @@ -261,26 +261,24 @@ static int sl82c105_ide_dma_on (ide_driv
>>
>>       if (config_for_dma(drive)) {
>>               config_for_pio(drive, 4, 0, 0);
> 
>   Ugh, this forces PIO4 on fallback... and dma_on() doesn't select any modes
> in any other driver but this one. :-/

>From looking at config_for_dma() it seems that it is a bug and it is safe to
remove config_for_pio() call (as your "[PATCH] sl82c105: DMA support fixes" does).

>> -             return HWIF(drive)->ide_dma_off_quietly(drive);
>> +             drive->hwif->dma_off_quietly(drive);
>> +             return 0;
>>       }
>>       printk(KERN_INFO "%s: DMA enabled\n", drive->name);
>>       return __ide_dma_on(drive);
>>  }
>>
>> -static int sl82c105_ide_dma_off_quietly (ide_drive_t *drive)
>> +static void sl82c105_ide_dma_off_quietly(ide_drive_t *drive)
> 
>    Also worth renaming...

done

>>  {
>>       u8 speed = XFER_PIO_0;
>> -     int rc;
>> -
>> +
>>       DBG(("sl82c105_ide_dma_off_quietly(drive:%s)\n", drive->name));
>>
>> -     rc = __ide_dma_off_quietly(drive);
>> +     ide_dma_off_quietly(drive);
>>       if (drive->pio_speed)
> 
>    Should always be non-zero since explicitly initialized.

yes

>>               speed = drive->pio_speed - XFER_PIO_0;
>>       config_for_pio(drive, speed, 0, 1);
>>       drive->current_speed = drive->pio_speed;
> 
>    dma_off() shouldn't be changing current_speed IMHO.

yep and your "[PATCH] sl82c105: DMA support fixes" fixes it

Bart

  parent reply	other threads:[~2007-02-02 22:34 UTC|newest]

Thread overview: 47+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-01-19  0:30 [PATCH 0/15] IDE quilt tree updated Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 1/15] ACPI support for IDE devices Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 2/15] via82cxxx/pata_via: correct PCI_DEVICE_ID_VIA_SATA_EIDE ID and add support for CX700 and 8237S Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 3/15] it8213: fix build and ->ultra_mask Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 4/15] ide: convert ide_hwif_t.mmio into flag Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 5/15] hpt34x: hpt34x_tune_chipset() (->speedproc) fix Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 6/15] atiixp/jmicron/triflex: fix PIO fallback Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 7/15] piix: cleanup Bartlomiej Zolnierkiewicz
2007-01-19  0:31 ` [PATCH 8/15] ide: disable DMA in ->ide_dma_check for "no IORDY" case Bartlomiej Zolnierkiewicz
2007-01-19 16:26   ` Sergei Shtylyov
     [not found]     ` <58cb370e0701191047h524434eobdb9d86ed614bc71@mail.gmail.com>
2007-01-19 19:11       ` Bartlomiej Zolnierkiewicz
2007-01-19 19:35         ` Sergei Shtylyov
     [not found]           ` <58cb370e0701191200i10119313i4aacae9c504a02e4@mail.gmail.com>
2007-01-19 21:43             ` Bartlomiej Zolnierkiewicz
2007-01-20 17:09               ` Sergei Shtylyov
     [not found]                 ` <58cb370e0701200947p578f4d74g1fee511ded6c9a77@mail.gmail.com>
2007-01-20 18:21                   ` Bartlomiej Zolnierkiewicz
2007-01-20 18:41                     ` Sergei Shtylyov
2007-01-25 17:03                     ` Sergei Shtylyov
2007-01-19  0:32 ` [PATCH 9/15] sgiioc4: fix sgiioc4_ide_dma_check() to enable/disable DMA properly Bartlomiej Zolnierkiewicz
2007-01-19  0:32 ` [PATCH 10/15] ide: add ide_set_dma() helper Bartlomiej Zolnierkiewicz
2007-01-20 20:22   ` Sergei Shtylyov
2007-01-19  0:32 ` [PATCH 11/15] ide: make ide_hwif_t.ide_dma_{host_off,off_quietly} void Bartlomiej Zolnierkiewicz
2007-01-20 20:56   ` Sergei Shtylyov
     [not found]     ` <58cb370e0702021206h205ff983r88fb4bdbea42ed9f@mail.gmail.com>
2007-02-02 22:39       ` Bartlomiej Zolnierkiewicz [this message]
2007-01-19  0:32 ` [PATCH 12/15] ide: make ide_hwif_t.ide_dma_host_on void Bartlomiej Zolnierkiewicz
2007-01-20 20:46   ` Sergei Shtylyov
     [not found]     ` <58cb370e0702021128g15cac87ar507c20e78ded9464@mail.gmail.com>
2007-02-02 21:16       ` Bartlomiej Zolnierkiewicz
2007-03-26 17:19   ` Sergei Shtylyov
2007-04-20 20:36     ` Sergei Shtylyov
2007-01-19  0:32 ` [PATCH 13/15] ide: fix UDMA/MWDMA/SWDMA masks Bartlomiej Zolnierkiewicz
2007-01-22 16:19   ` Sergei Shtylyov
     [not found]     ` <58cb370e0702021606v4efa6143lf060e6aab9782c35@mail.gmail.com>
2007-02-03  0:39       ` Bartlomiej Zolnierkiewicz
2007-02-03 16:30         ` Sergei Shtylyov
2007-01-22 18:17   ` Sergei Shtylyov
2007-01-22 18:46     ` Alan
2007-01-22 20:28       ` Sergei Shtylyov
2007-01-22 21:31         ` Alan
2007-01-22 22:39           ` Jeff Garzik
2007-01-23 14:51           ` Sergei Shtylyov
2007-01-25 15:40             ` Sergei Shtylyov
2007-01-31 20:38       ` Sergei Shtylyov
2007-01-31 23:24         ` Alan
     [not found]     ` <58cb370e0702021606m4eb6f682xfa4bf769d398cf9@mail.gmail.com>
2007-02-03  0:50       ` Bartlomiej Zolnierkiewicz
2007-01-19  0:32 ` [PATCH 14/15] ide: rework the code for selecting the best DMA transfer mode Bartlomiej Zolnierkiewicz
2007-01-22 19:48   ` Sergei Shtylyov
     [not found]     ` <58cb370e0702021207o435f39cdsf3abb0d55829fc45@mail.gmail.com>
2007-02-02 23:57       ` Bartlomiej Zolnierkiewicz
2007-01-19  0:32 ` [PATCH 15/15] ide: add ide_tune_dma() helper Bartlomiej Zolnierkiewicz
2007-02-03 13:53 [PATCH 11/15] ide: make ide_hwif_t.ide_dma_{host_off,off_quietly} void Bartlomiej Zolnierkiewicz

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