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thunderbolt: Wait a bit longer for ICM to authenticate the active NVM

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Sometimes during cold boot ICM has not yet authenticated the active NVM
image leading to timeout and failing the driver probe. Allow ICM to take
some more time and increase the timeout to 3 seconds before we give up.

While there fix icm_firmware_init() to return the real error code
without overwriting it with -ENODEV.

Fixes: f67cf49117 ("thunderbolt: Add support for Internal Connection Manager (ICM)")
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Mika Westerberg 2017-11-24 17:51:12 +03:00
parent 44b51bbb16
commit e4be8c9b6a
1 changed files with 5 additions and 2 deletions
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7
drivers/thunderbolt/icm.c
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@ -736,14 +736,14 @@ static bool icm_ar_is_supported(struct tb *tb)
static int icm_ar_get_mode(struct tb *tb)
{
struct tb_nhi *nhi = tb->nhi;
int retries = 5;
int retries = 60;
u32 val;
do {
val = ioread32(nhi->iobase + REG_FW_STS);
if (val & REG_FW_STS_NVM_AUTH_DONE)
break;
msleep(30);
msleep(50);
} while (--retries);
if (!retries) {
@ -1063,6 +1063,9 @@ static int icm_firmware_init(struct tb *tb)
break;
default:
if (ret < 0)
return ret;
tb_err(tb, "ICM firmware is in wrong mode: %u\n", ret);
return -ENODEV;
}