diff options
Diffstat (limited to 'drivers/thunderbolt/icm.c')
| -rw-r--r-- | drivers/thunderbolt/icm.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c index 2f30b816705a..0f25cf9fe519 100644 --- a/drivers/thunderbolt/icm.c +++ b/drivers/thunderbolt/icm.c @@ -1677,14 +1677,18 @@ static void icm_icl_rtd3_veto(struct tb *tb, const struct icm_pkg_header *hdr) static bool icm_tgl_is_supported(struct tb *tb) { - u32 val; + unsigned long end = jiffies + msecs_to_jiffies(10); - /* - * If the firmware is not running use software CM. This platform - * should fully support both. - */ - val = ioread32(tb->nhi->iobase + REG_FW_STS); - return !!(val & REG_FW_STS_NVM_AUTH_DONE); + do { + u32 val; + + val = ioread32(tb->nhi->iobase + REG_FW_STS); + if (val & REG_FW_STS_NVM_AUTH_DONE) + return true; + usleep_range(100, 500); + } while (time_before(jiffies, end)); + + return false; } static void icm_handle_notification(struct work_struct *work) |