From: Paul Davey <paul.davey@alliedtelesis.co.nz>
To: Manivannan Sadhasivam <mani@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
Paul Davey <paul.davey@alliedtelesis.co.nz>
Subject: [PATCH 1/2] bus: mhi: Fix pm_state conversion to string
Date: Fri, 18 Jun 2021 15:31:31 +1200 [thread overview]
Message-ID: <20210618033132.24839-2-paul.davey@alliedtelesis.co.nz> (raw)
In-Reply-To: <20210618033132.24839-1-paul.davey@alliedtelesis.co.nz>
On big endian architectures the mhi debugfs files which report pm state
give "Invalid State" for all states.
Fix to_mhi_pm_state_str by using a local unsigned long as an intemediate
to pass the state to find_last_bit to avoid endianness issues with cast
from enum mhi_pm_state * to unsigned long *.
Signed-off-by: Paul Davey <paul.davey@alliedtelesis.co.nz>
---
drivers/bus/mhi/core/init.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/bus/mhi/core/init.c b/drivers/bus/mhi/core/init.c
index c81b377fca8f..87cc0c449078 100644
--- a/drivers/bus/mhi/core/init.c
+++ b/drivers/bus/mhi/core/init.c
@@ -79,7 +79,8 @@ static const char * const mhi_pm_state_str[] = {
const char *to_mhi_pm_state_str(enum mhi_pm_state state)
{
- int index = find_last_bit((unsigned long *)&state, 32);
+ unsigned long tmp = state;
+ int index = find_last_bit((unsigned long *)&tmp, 32);
if (index >= ARRAY_SIZE(mhi_pm_state_str))
return "Invalid State";
--
2.32.0
next prev parent reply other threads:[~2021-06-18 3:32 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 3:31 [PATCH 0/2] bus: mhi: Fix MHI on big endian architectures Paul Davey
2021-06-18 3:31 ` Paul Davey [this message]
2021-06-18 6:12 ` [PATCH 1/2] bus: mhi: Fix pm_state conversion to string Manivannan Sadhasivam
2021-06-18 21:41 ` Hemant Kumar
2021-06-18 3:31 ` [PATCH 2/2] bus: mhi: Fix MHI DMA structure endianness Paul Davey
2021-06-18 6:29 ` Manivannan Sadhasivam
2021-06-18 6:32 ` Manivannan Sadhasivam
2021-06-22 1:31 ` Bhaumik Bhatt
2021-06-18 5:44 ` [PATCH 0/2] bus: mhi: Fix MHI on big endian architectures Manivannan Sadhasivam
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