On Wed, 2016-12-21 at 13:57 -0800, Himanshu Madhani wrote:
> During NVRAM initialization in target mode, reset reserved
> fields in firmware options to Zero (BIT 15)
>
> Signed-off-by: Himanshu Madhani <himanshu.madhani@xxxxxxxxxx>
> Signed-off-by: Giridhar Malavali <giridhar.malavali@xxxxxxxxxx>
> ---
> drivers/scsi/qla2xxx/qla_target.c | 17 ++++++++++++++++-
> 1 file changed, 16 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c
> index b9c559c..5037b51 100644
> --- a/drivers/scsi/qla2xxx/qla_target.c
> +++ b/drivers/scsi/qla2xxx/qla_target.c
> @@ -6539,6 +6539,14 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
>
> /* Disable Full Login after LIP */
> nv->host_p &= cpu_to_le32(~BIT_10);
> +
> + /*
> + * clear BIT 15 explicitly as we have seen at least
> + * a couple of instances where this was set and this
> + * was causing the firmware to not be initialized.
> + */
> + nv->firmware_options_1 &=
> + __constant_cpu_to_le32(~BIT_15);
> /* Enable target PRLI control */
> nv->firmware_options_2 |= cpu_to_le32(BIT_14);
> } else {
> @@ -6623,11 +6631,18 @@ static void qlt_disable_vha(struct scsi_qla_host *vha)
> /* Disable ini mode, if requested */
> if (!qla_ini_mode_enabled(vha))
> nv->firmware_options_1 |= cpu_to_le32(BIT_5);
> -
> /* Disable Full Login after LIP */
> nv->firmware_options_1 &= cpu_to_le32(~BIT_13);
> /* Enable initial LIP */
> nv->firmware_options_1 &= cpu_to_le32(~BIT_9);
> + /*
> + * clear BIT 15 explicitly as we have seen at
> + * least a couple of instances where this was set
> + * and this was causing the firmware to not be
> + * initialized.
> + */
> + nv->firmware_options_1 &=
> + __constant_cpu_to_le32(~BIT_15);
> if (ql2xtgt_tape_enable)
> /* Enable FC tape support */
> nv->firmware_options_2 |= cpu_to_le32(BIT_12);
Hello Himanshu,
Please use cpu_to_le32() in new code instead of __constant_cpu_to_le32().
gcc generates the same code for both conversion functions but the former
function makes source code easier to read.
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