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thunderbolt: Wait a bit longer for root switch config space 

In some case reading root switch config space takes longer than what we
are currently waiting in the driver resulting timeout and failure.
Increase number of retries to allow some more time for the root switch
config space to become accesssible.

Also log an error if the timeout is exceeded so we know why the driver
probe failed.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
hifive-unleashed-5.1
Mika Westerberg 2017-09-14 13:44:07 +03:00
parent 68a7a2ace1
commit 44b51bbb16
1 changed files with 2 additions and 1 deletions
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3
drivers/thunderbolt/icm.c
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@ -828,7 +828,7 @@ __icm_driver_ready(struct tb *tb, enum tb_security_level *security_level)
struct icm_pkg_driver_ready request = {
.hdr.code = ICM_DRIVER_READY,
};
unsigned int retries = 10;
unsigned int retries = 50;
int ret;
memset(&reply, 0, sizeof(reply));
@ -856,6 +856,7 @@ __icm_driver_ready(struct tb *tb, enum tb_security_level *security_level)
msleep(50);
} while (--retries);
tb_err(tb, "failed to read root switch config space, giving up\n");
return -ETIMEDOUT;
}