diff options
| author | Li Jun <jun.li@freescale.com> | 2015-03-27 11:43:01 (GMT) |
|---|---|---|
| committer | Peter Chen <peter.chen@freescale.com> | 2015-04-08 06:32:00 (GMT) |
| commit | 0c4d6af42d8375e003f0e4626f2f661862b5df4b (patch) | |
| tree | da06d4595c2e0428296abe69126241d5e153ae62 /drivers/usb | |
| parent | 9b6567e19bc55187bc1bb094b00a9f63acb30071 (diff) | |
| download | linux-0c4d6af42d8375e003f0e4626f2f661862b5df4b.tar.xz | |
usb: chipidea: debug: add low power mode check before print registers
Since the required clock to access registers is gated off in low power mode,
add ci->in_lpm check before try to dump registers value.
Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/chipidea/debug.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/usb/chipidea/debug.c b/drivers/usb/chipidea/debug.c index 268e423..dfb05ed 100644 --- a/drivers/usb/chipidea/debug.c +++ b/drivers/usb/chipidea/debug.c @@ -336,8 +336,8 @@ static int ci_registers_show(struct seq_file *s, void *unused) struct ci_hdrc *ci = s->private; u32 tmp_reg; - if (!ci) - return 0; + if (!ci || ci->in_lpm) + return -EPERM; /* ------ Registers ----- */ tmp_reg = hw_read_intr_enable(ci); |