Re: [SCSI] qla1280: endianess annotations

From: Christoph Hellwig
Date: Thu Sep 08 2005 - 05:44:48 EST


On Wed, Sep 07, 2005 at 10:13:21PM -0400, Jeff Garzik wrote:
> Linux Kernel Mailing List wrote:
> >diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c
> >--- a/drivers/scsi/qla1280.c
> >+++ b/drivers/scsi/qla1280.c
> >@@ -1546,7 +1546,7 @@ qla1280_return_status(struct response *
> > int host_status = DID_ERROR;
> > uint16_t comp_status = le16_to_cpu(sts->comp_status);
> > uint16_t state_flags = le16_to_cpu(sts->state_flags);
> >- uint16_t residual_length = le16_to_cpu(sts->residual_length);
> >+ uint16_t residual_length = le32_to_cpu(sts->residual_length);
> > uint16_t scsi_status = le16_to_cpu(sts->scsi_status);
> [...]
> >+ __le16 status_flags; /* Status flags. */
> >+ __le16 time; /* Time. */
> >+ __le16 req_sense_length;/* Request sense data length. */
> >+ __le32 residual_length; /* Residual transfer length. */
> >+ __le16 reserved[4];
> > uint8_t req_sense_data[32]; /* Request sense data. */
>
> This isn't merely an endian annotation.
>
> Is this a size fix, from 16 to 32, or a typo? If its not a typo,
> shouldn't the variable be declared 'uint32_t residual_length'?

It's a typo-fix. The variable is 32bits in hardware. Declaring it
in 32bit in software might make sense, but isn't that important. Feel
free to send a patch if you care enough.

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