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crypto: caam - fix DECO RSR polling

Browse source 
RSR (Request Source Register) is not used when
virtualization is disabled, thus don't poll for Valid bit.

Besides this, if used, timeout has to be reinitialized.

Signed-off-by: Horia Geanta <[email protected]>
Acked-by: Kim Phillips <[email protected]>
Signed-off-by: Herbert Xu <[email protected]>
This commit is contained in:
Horia Geanta 2014-07-21 16:03:21 +03:00 • committed by Herbert Xu
commit 8f1da7b945
1 changed files with 7 additions and 4 deletions
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11
drivers/crypto/caam/ctrl.c
View file

@ -89,12 +89,15 @@ static inline int run_descriptor_deco0(struct device *ctrldev, u32 *desc,
/* Set the bit to request direct access to DECO0 */
topregs = (struct caam_full __iomem *)ctrlpriv->ctrl;
if (ctrlpriv->virt_en == 1)
if (ctrlpriv->virt_en == 1) {
setbits32(&topregs->ctrl.deco_rsr, DECORSR_JR0);
while (!(rd_reg32(&topregs->ctrl.deco_rsr) & DECORSR_VALID) &&
--timeout)
cpu_relax();
while (!(rd_reg32(&topregs->ctrl.deco_rsr) & DECORSR_VALID) &&
--timeout)
cpu_relax();
timeout = 100000;
}
setbits32(&topregs->ctrl.deco_rq, DECORR_RQD0ENABLE);