diff options
Diffstat (limited to 'rpmsg-Make-modalias-work-for-DeviceTree-based-devices.patch')
| -rw-r--r-- | rpmsg-Make-modalias-work-for-DeviceTree-based-devices.patch | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/rpmsg-Make-modalias-work-for-DeviceTree-based-devices.patch b/rpmsg-Make-modalias-work-for-DeviceTree-based-devices.patch new file mode 100644 index 000000000..6d46c9ffe --- /dev/null +++ b/rpmsg-Make-modalias-work-for-DeviceTree-based-devices.patch @@ -0,0 +1,57 @@ +From patchwork Wed Jun 28 21:53:23 2017 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +Subject: [v2] rpmsg: Make modalias work for DeviceTree based devices +From: Bjorn Andersson <bjorn.andersson@linaro.org> +X-Patchwork-Id: 9815555 +Message-Id: <20170628215323.5658-1-bjorn.andersson@linaro.org> +To: Ohad Ben-Cohen <ohad@wizery.com>, + Bjorn Andersson <bjorn.andersson@linaro.org> +Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, + Rob Clark <robdclark@gmail.com> +Date: Wed, 28 Jun 2017 14:53:23 -0700 + +When rpmsg devices are expected to be matched based on their compatible +the modalias should reflect this, so that module autoloading has a +chance to match and load the appropriate module. + +Tested-by: Rob Clark <robdclark@gmail.com> +Reported-by: Rob Clark <robdclark@gmail.com> +Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> +--- + +Changes since v1: +- Also update rpmsg_uevent() + + drivers/rpmsg/rpmsg_core.c | 10 ++++++++++ + 1 file changed, 10 insertions(+) + +diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c +index ad3d2a9df287..067650c5bcb6 100644 +--- a/drivers/rpmsg/rpmsg_core.c ++++ b/drivers/rpmsg/rpmsg_core.c +@@ -343,6 +343,11 @@ static ssize_t modalias_show(struct device *dev, + struct device_attribute *attr, char *buf) + { + struct rpmsg_device *rpdev = to_rpmsg_device(dev); ++ ssize_t len; ++ ++ len = of_device_modalias(dev, buf, PAGE_SIZE); ++ if (len != -ENODEV) ++ return len; + + return sprintf(buf, RPMSG_DEVICE_MODALIAS_FMT "\n", rpdev->id.name); + } +@@ -387,6 +392,11 @@ static int rpmsg_dev_match(struct device *dev, struct device_driver *drv) + static int rpmsg_uevent(struct device *dev, struct kobj_uevent_env *env) + { + struct rpmsg_device *rpdev = to_rpmsg_device(dev); ++ int ret; ++ ++ ret = of_device_uevent_modalias(dev, env); ++ if (ret != -ENODEV) ++ return ret; + + return add_uevent_var(env, "MODALIAS=" RPMSG_DEVICE_MODALIAS_FMT, + rpdev->id.name); |