Messages in this thread Patch in this message | | | Date | Mon, 23 Apr 2001 18:06:53 +0200 | From | Marcus Meissner <> | Subject | Re: [PATCH] es1371 pci fix/cleanup |
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On Mon, Apr 23, 2001 at 11:58:25AM -0400, Jeff Garzik wrote: > Marcus Meissner wrote: > > > > Hi, > > > > This moves pci_enable_device in the es1371 driver before any resource > > access and also replaces the RSRCISIOREGION by just pci_resource_flags > > as suggested by Jeff. > > > > Tested and verified.
> Looks ok except error returns. > > pci_enable_device - obtain its return value, and return that. > > no IORESOURCE_IO or pcidev->irq==0 - I guess -ENODEV would be > appropriate. (basically look at errno.h and make a judgement call which > error best fits the situation)
Hmm, I think I spotted all places in the probe function. I also return -ENODEV in case we can't request_region() or request_irq().
Some drivers use EBUSY, some ENOMEM, some ENODEV there, is there any standard return value?
Ciao, Marcus
Index: drivers/sound/es1371.c =================================================================== RCS file: /build/mm/work/repository/linux-mm/drivers/sound/es1371.c,v retrieving revision 1.7 diff -u -r1.7 es1371.c --- drivers/sound/es1371.c 2001/04/17 17:26:05 1.7 +++ drivers/sound/es1371.c 2001/04/23 16:03:34 @@ -2771,22 +2771,22 @@ { SOUND_MIXER_WRITE_IGAIN, 0x4040 } }; -#define RSRCISIOREGION(dev,num) (pci_resource_start((dev), (num)) != 0 && \ - (pci_resource_flags((dev), (num)) & IORESOURCE_IO)) - static int __devinit es1371_probe(struct pci_dev *pcidev, const struct pci_device_id *pciid) { struct es1371_state *s; mm_segment_t fs; - int i, val; + int i, val, res = -1; unsigned long tmo; signed long tmo2; unsigned int cssr; + + if ((res=pci_enable_device(pcidev))) + return res; - if (!RSRCISIOREGION(pcidev, 0)) - return -1; + if (!(pci_resource_flags(pcidev, 0) & IORESOURCE_IO)) + return -ENODEV; if (pcidev->irq == 0) - return -1; + return -ENODEV; i = pci_set_dma_mask(pcidev, 0xffffffff); if (i) { printk(KERN_WARNING "es1371: architecture does not support 32bit PCI busmaster DMA\n"); @@ -2794,7 +2794,7 @@ } if (!(s = kmalloc(sizeof(struct es1371_state), GFP_KERNEL))) { printk(KERN_WARNING PFX "out of memory\n"); - return -1; + return -ENOMEM; } memset(s, 0, sizeof(struct es1371_state)); init_waitqueue_head(&s->dma_adc.wait); @@ -2822,8 +2822,6 @@ printk(KERN_ERR PFX "io ports %#lx-%#lx in use\n", s->io, s->io+ES1371_EXTENT-1); goto err_region; } - if (pci_enable_device(pcidev)) - goto err_irq; if (request_irq(s->irq, es1371_interrupt, SA_SHIRQ, "es1371", s)) { printk(KERN_ERR PFX "irq %u in use\n", s->irq); goto err_irq; @@ -2964,7 +2962,7 @@ release_region(s->io, ES1371_EXTENT); err_region: kfree(s); - return -1; + return -ENODEV; } static void __devinit es1371_remove(struct pci_dev *dev) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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