diff options
| author | Finn Thain <fthain@telegraphics.com.au> | 2014-11-12 16:12:03 +1100 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2014-11-20 09:11:11 +0100 |
| commit | fd9cd67c3d89f9ee350ea6fda802375bf1d66b0b (patch) | |
| tree | 54a1ddbb23d4a6b6e31368b53ac1c753c73a9539 /drivers/scsi/dmx3191d.c | |
| parent | 710ddd0d50d22b40e3b644ea35966489ad178978 (diff) | |
| download | linux-stable-fd9cd67c3d89f9ee350ea6fda802375bf1d66b0b.tar.gz linux-stable-fd9cd67c3d89f9ee350ea6fda802375bf1d66b0b.tar.bz2 linux-stable-fd9cd67c3d89f9ee350ea6fda802375bf1d66b0b.zip | |
dmx3191d: Use NO_IRQ
Testing shows that the Domex 3191D card never asserts its IRQ. Hence it is
non-functional with Linux (worse, the EH bugs in the core driver are fatal
but that's a problem for another patch). Perhaps the DT-536 chip needs
special setup? I can't find documentation for it. The NetBSD driver uses
polling apparently because of this issue.
Set host->irq = NO_IRQ so the core driver will prevent targets from
disconnecting. Don't request host->irq.
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/scsi/dmx3191d.c')
| -rw-r--r-- | drivers/scsi/dmx3191d.c | 25 |
1 files changed, 8 insertions, 17 deletions
diff --git a/drivers/scsi/dmx3191d.c b/drivers/scsi/dmx3191d.c index 159434a5cfdb..3e088125a8be 100644 --- a/drivers/scsi/dmx3191d.c +++ b/drivers/scsi/dmx3191d.c @@ -34,6 +34,8 @@ * Definitions for the generic 5380 driver. */ +#define DONT_USE_INTR + #define NCR5380_read(reg) inb(port + reg) #define NCR5380_write(reg, value) outb(value, port + reg) @@ -89,32 +91,23 @@ static int dmx3191d_probe_one(struct pci_dev *pdev, if (!shost) goto out_release_region; shost->io_port = io; - shost->irq = pdev->irq; - NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); + /* This card does not seem to raise an interrupt on pdev->irq. + * Steam-powered SCSI controllers run without an IRQ anyway. + */ + shost->irq = NO_IRQ; - if (request_irq(pdev->irq, NCR5380_intr, IRQF_SHARED, - DMX3191D_DRIVER_NAME, shost)) { - /* - * Steam powered scsi controllers run without an IRQ anyway - */ - printk(KERN_WARNING "dmx3191: IRQ %d not available - " - "switching to polled mode.\n", pdev->irq); - shost->irq = NO_IRQ; - } + NCR5380_init(shost, FLAG_NO_PSEUDO_DMA | FLAG_DTC3181E); pci_set_drvdata(pdev, shost); error = scsi_add_host(shost, &pdev->dev); if (error) - goto out_free_irq; + goto out_release_region; scsi_scan_host(shost); return 0; - out_free_irq: - if (shost->irq != NO_IRQ) - free_irq(shost->irq, shost); out_release_region: release_region(io, DMX3191D_REGION_LEN); out_disable_device: @@ -131,8 +124,6 @@ static void dmx3191d_remove_one(struct pci_dev *pdev) NCR5380_exit(shost); - if (shost->irq != NO_IRQ) - free_irq(shost->irq, shost); release_region(shost->io_port, DMX3191D_REGION_LEN); pci_disable_device(pdev); |