diff options
| author | Alex Elder <elder@linaro.org> | 2022-12-31 01:33:04 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-01-01 15:01:14 +0300 |
| commit | d9d71a89f28d27ac772c429b37d52668d011df7a (patch) | |
| tree | 4e54b78010a21f54d0b1ff64e39795326ddf569b | |
| parent | 1c429c10192c930fd358b0c9a777c222a352d945 (diff) | |
| download | linux-d9d71a89f28d27ac772c429b37d52668d011df7a.tar.xz | |
net: ipa: use proper endpoint mask for suspend
It is now possible for a system to have more than 32 endpoints. As
a result, registers related to endpoint suspend are parameterized,
with 32 endpoints represented in one more registers.
In ipa_interrupt_suspend_control(), the IPA_SUSPEND_EN register
offset is determined properly, but the bit mask used still assumes
the number of enpoints won't exceed 32. This is a bug. Fix it.
Fixes: f298ba785e2d ("net: ipa: add a parameter to suspend registers")
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ipa/ipa_interrupt.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/net/ipa/ipa_interrupt.c b/drivers/net/ipa/ipa_interrupt.c index a49f66efacb8..d458a35839cc 100644 --- a/drivers/net/ipa/ipa_interrupt.c +++ b/drivers/net/ipa/ipa_interrupt.c @@ -132,10 +132,10 @@ static void ipa_interrupt_suspend_control(struct ipa_interrupt *interrupt, u32 endpoint_id, bool enable) { struct ipa *ipa = interrupt->ipa; + u32 mask = BIT(endpoint_id % 32); u32 unit = endpoint_id / 32; const struct ipa_reg *reg; u32 offset; - u32 mask; u32 val; WARN_ON(!test_bit(endpoint_id, ipa->available)); @@ -148,7 +148,6 @@ static void ipa_interrupt_suspend_control(struct ipa_interrupt *interrupt, offset = ipa_reg_n_offset(reg, unit); val = ioread32(ipa->reg_virt + offset); - mask = BIT(endpoint_id); if (enable) val |= mask; else |