On Mon, 2014-03-10 at 15:28 +0100, Hannes Reinecke wrote:
> The scsi_device now has VPD page83 information attached, so
> there is no need to query it again.
This is a bit new for a v8 patch, have you actually tested it? I'm
asking because it looks to me like the vpd attach is done just before
the configure whereas the bindings are usually done in add. I suspect
this will work for ses because it's a device model binding rather than a
transport class binding and the former occurs later, but knowing it
actually all works would be useful.
James
> Signed-off-by: Hannes Reinecke <h...@suse.de>
> ---
> drivers/scsi/ses.c | 38 ++++++++++----------------------------
> 1 file changed, 10 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/scsi/ses.c b/drivers/scsi/ses.c
> index eba183c..80bfece 100644
> --- a/drivers/scsi/ses.c
> +++ b/drivers/scsi/ses.c
> @@ -25,6 +25,7 @@
> #include <linux/module.h>
> #include <linux/kernel.h>
> #include <linux/enclosure.h>
> +#include <asm/unaligned.h>
>
> #include <scsi/scsi.h>
> #include <scsi/scsi_cmnd.h>
> @@ -448,27 +449,18 @@ static void ses_enclosure_data_process(struct
> enclosure_device *edev,
> static void ses_match_to_enclosure(struct enclosure_device *edev,
> struct scsi_device *sdev)
> {
> - unsigned char *buf;
> unsigned char *desc;
> - unsigned int vpd_len;
> struct efd efd = {
> .addr = 0,
> };
>
> - buf = kmalloc(INIT_ALLOC_SIZE, GFP_KERNEL);
> - if (!buf || scsi_get_vpd_page(sdev, 0x83, buf, INIT_ALLOC_SIZE))
> - goto free;
> -
> ses_enclosure_data_process(edev, to_scsi_device(edev->edev.parent), 0);
>
> - vpd_len = ((buf[2] << 8) | buf[3]) + 4;
> - kfree(buf);
> - buf = kmalloc(vpd_len, GFP_KERNEL);
> - if (!buf ||scsi_get_vpd_page(sdev, 0x83, buf, vpd_len))
> - goto free;
> + if (!sdev->vpd_pg83_len)
> + return;
>
> - desc = buf + 4;
> - while (desc < buf + vpd_len) {
> + desc = sdev->vpd_pg83 + 4;
> + while (desc < sdev->vpd_pg83 + sdev->vpd_pg83_len) {
> enum scsi_protocol proto = desc[0] >> 4;
> u8 code_set = desc[0] & 0x0f;
> u8 piv = desc[1] & 0x80;
> @@ -478,25 +470,15 @@ static void ses_match_to_enclosure(struct
> enclosure_device *edev,
>
> if (piv && code_set == 1 && assoc == 1
> && proto == SCSI_PROTOCOL_SAS && type == 3 && len == 8)
> - efd.addr = (u64)desc[4] << 56 |
> - (u64)desc[5] << 48 |
> - (u64)desc[6] << 40 |
> - (u64)desc[7] << 32 |
> - (u64)desc[8] << 24 |
> - (u64)desc[9] << 16 |
> - (u64)desc[10] << 8 |
> - (u64)desc[11];
> + efd.addr = get_unaligned_be64(&desc[4]);
>
> desc += len + 4;
> }
> - if (!efd.addr)
> - goto free;
> + if (efd.addr) {
> + efd.dev = &sdev->sdev_gendev;
>
> - efd.dev = &sdev->sdev_gendev;
> -
> - enclosure_for_each_device(ses_enclosure_find_by_addr, &efd);
> - free:
> - kfree(buf);
> + enclosure_for_each_device(ses_enclosure_find_by_addr, &efd);
> + }
> }
>
> static int ses_intf_add(struct device *cdev,
--
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