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Message-ID: <20230830022908.36264-2-luke@ljones.dev>
Date: Wed, 30 Aug 2023 14:29:08 +1200
From: "Luke D. Jones" <luke@...nes.dev>
To: hdegoede@...hat.com
Cc: corentin.chary@...il.com, markgross@...nel.org,
linux-kernel@...r.kernel.org, platform-driver-x86@...r.kernel.org,
"Luke D. Jones" <luke@...nes.dev>
Subject: [PATCH v2 1/1] platform/x86: asus-wmi: corrections to egpu safety check
An incorrect if statement was preventing the enablement of the egpu.
Fixes: d49f4d1a30ac ("platform/x86: asus-wmi: don't allow eGPU switching if eGPU not connected")
Signed-off-by: Luke D. Jones <luke@...nes.dev>
---
drivers/platform/x86/asus-wmi.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 9783893d2d6e..f54178d6f780 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -726,19 +726,18 @@ static ssize_t egpu_enable_store(struct device *dev,
return -EINVAL;
err = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_EGPU_CONNECTED);
- if (err < 0)
- return err;
- if (err < 1) {
- err = -ENODEV;
- pr_warn("Failed to set egpu disable: %d\n", err);
+ if (err < 0) {
+ pr_warn("Failed to get egpu connection status: %d\n", err);
return err;
}
if (asus->gpu_mux_mode_available) {
result = asus_wmi_get_devstate_simple(asus, ASUS_WMI_DEVID_GPU_MUX);
- if (result < 0)
+ if (result < 0) {
/* An error here may signal greater failure of GPU handling */
+ pr_warn("Failed to get gpu mux status: %d\n", err);
return result;
+ }
if (!result && enable) {
err = -ENODEV;
pr_warn("Can not enable eGPU when the MUX is in dGPU mode: %d\n", err);
@@ -748,12 +747,12 @@ static ssize_t egpu_enable_store(struct device *dev,
err = asus_wmi_set_devstate(ASUS_WMI_DEVID_EGPU, enable, &result);
if (err) {
- pr_warn("Failed to set egpu disable: %d\n", err);
+ pr_warn("Failed to set egpu state: %d\n", err);
return err;
}
if (result > 1) {
- pr_warn("Failed to set egpu disable (retval): 0x%x\n", result);
+ pr_warn("Failed to set egpu state (retval): 0x%x\n", result);
return -EIO;
}
--
2.41.0
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