[ Upstream commit
faeadbb64094757150a8c2a3175ca418dbdd472c ]
The remoteproc framework provides a sysfs file 'firmware'
for modifying the firmware image name from userspace. Add
an additional check to ensure NULL firmwares are errored
out right away, rather than getting a delayed error while
requesting a firmware during the start of a remoteproc
later on.
Tested-by: Arnaud Pouliquen <arnaud.pouliquen@st.com>
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
}
len = strcspn(buf, "\n");
+ if (!len) {
+ dev_err(dev, "can't provide a NULL firmware\n");
+ err = -EINVAL;
+ goto out;
+ }
p = kstrndup(buf, len, GFP_KERNEL);
if (!p) {