From: Jeff Garzik <jeff@garzik.org>
To: Matthew Wilcox <matthew@wil.cx>
Cc: linux-scsi@vger.kernel.org, Matthew Wilcox <willy@linux.intel.com>
Subject: Re: [PATCH 15/17] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE
Date: Fri, 05 Oct 2007 17:04:56 -0400 [thread overview]
Message-ID: <4706A6F8.4@garzik.org> (raw)
In-Reply-To: <11916141153280-git-send-email-matthew@wil.cx>
Matthew Wilcox wrote:
> Make sym_interrupt return an irqreturn_t instead of void, and take a
> Scsi_Host instead of a sym_hcb. Pass the Scsi_Host to the interrupt
> handler instead of the sym_hcb. Rename the host_data to sym_data.
> Keep a pci_dev pointer in the sym_data. Rename the Scsi_Host from
> instance to shost.
>
> Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
ACK
Additionally, consider checking for istat==0xffffffff and returning
IRQ_NONE, like most other drivers. This handles the window during
hot-unplug where you wind up reading a hardware register after the
hardware is gone, but before the driver has been notified of unplug.
The normal behavior of hardware for this case is to return all 1's upon
PCI device fault/unplug.
Presuming you don't have fancy-shmancy PCI error reporting hw :)
next prev parent reply other threads:[~2007-10-05 21:04 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-05 19:54 [PATCH 1/17] sym53c8xx: Work around 53c896 erratum Matthew Wilcox
2007-10-05 19:54 ` [PATCH 2/17] sym53c8xx: Use pci_dev irq number Matthew Wilcox
2007-10-05 20:51 ` Jeff Garzik
2007-10-05 19:55 ` [PATCH 3/17] sym53c8xx: Remove data_mapping and data_mapped Matthew Wilcox
2007-10-05 20:52 ` Jeff Garzik
2007-10-05 19:55 ` [PATCH 4/17] sym53c8xx: Remove unnecessary check in queuecommand Matthew Wilcox
2007-10-05 19:55 ` [PATCH 5/17] sym53c8xx: Don't disable interrupts in the interrupt handler Matthew Wilcox
2007-10-05 19:55 ` [PATCH 6/17] sym53c8xx: Stop overriding scsi_done Matthew Wilcox
2007-10-05 19:55 ` [PATCH 7/17] sym53c8xx: PCI Error Recovery support Matthew Wilcox
2007-10-05 20:54 ` Jeff Garzik
2007-10-05 19:55 ` [PATCH 8/17] sym53c8xx: Use pdev->revision Matthew Wilcox
2007-10-05 19:55 ` [PATCH 9/17] sym53c8xx: Remove ->device_id Matthew Wilcox
2007-10-05 19:55 ` [PATCH 10/17] sym53c8xx: Remove io_ws, mmio_ws and ram_ws elements Matthew Wilcox
2007-10-05 20:55 ` Jeff Garzik
2007-10-05 19:55 ` [PATCH 11/17] sym53c8xx: Remove tag_ctrl module parameter Matthew Wilcox
2007-10-05 20:56 ` Jeff Garzik
2007-10-09 15:35 ` Matthew Wilcox
2007-10-05 19:55 ` [PATCH 12/17] sym53c8xx: Simplify DAC DMA handling Matthew Wilcox
2007-10-05 19:55 ` [PATCH 13/17] sym53c8xx: Use scmd_printk where appropriate Matthew Wilcox
2007-10-05 20:59 ` Jeff Garzik
2007-10-05 19:55 ` [PATCH 14/17] sym53c8xx: Get rid of IRQ_FMT and IRQ_PRM Matthew Wilcox
2007-10-05 20:59 ` Jeff Garzik
2007-10-09 15:28 ` Matthew Wilcox
2007-10-09 15:35 ` Jeff Garzik
2007-10-09 15:44 ` Matthew Wilcox
2007-10-09 15:47 ` Jeff Garzik
2007-10-05 19:55 ` [PATCH 15/17] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE Matthew Wilcox
2007-10-05 21:04 ` Jeff Garzik [this message]
2007-10-05 19:55 ` [PATCH 16/17] sym53c8xx: Remove pci_dev pointer from sym_shcb Matthew Wilcox
2007-10-05 21:07 ` Jeff Garzik
2007-10-09 15:27 ` Matthew Wilcox
2007-10-05 19:55 ` [PATCH 17/17] sym53c8xx: Remove sym_xpt_async_sent_bdr Matthew Wilcox
2007-10-05 21:07 ` Jeff Garzik
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