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ANDROID: firmware_loader: Emit empty string when no custom paths

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firmware_param_path_get will return -1 if no custom firmware paths have
been set. Use sysfs_emit_at to form the response string and now emit an
empty string as expected when there are no custom firmware paths.

Fixes: ce17e299d0 ("ANDROID: firmware_loader: Add support for customer firmware paths")
Change-Id: If695733c81b3cef105c28dff7a6c1b6e722b2169
Signed-off-by: Elliot Berman <quic_eberman@quicinc.com>
This commit is contained in:
Elliot Berman 2023-02-15 14:26:25 -08:00 • committed by Treehugger Robot
parent bc7370e205
commit e4c0c0c443
1 changed files with 3 additions and 6 deletions
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9
drivers/base/firmware_loader/main.c
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@ -525,14 +525,11 @@ static int firmware_param_path_get(char *buffer, const struct kernel_param *kp)
{
int count = 0, i;
for (i = 0; i < CUSTOM_FW_PATH_COUNT; i++) {
for (i = 0; i < CUSTOM_FW_PATH_COUNT; i++)
if (strlen(fw_path_para[i]) != 0)
count += scnprintf(buffer + count, PATH_SIZE, "%s%s", fw_path_para[i], ",");
}
count += sysfs_emit_at(buffer, count, "%s,", fw_path_para[i]);
buffer[count - 1] = '\0';
return count - 1;
return count;
}
/*
* Typical usage is that passing 'firmware_class.path=/vendor,/firwmare_mnt'