Hi,
On 7/1/20 1:22 PM, matthias.bgg@xxxxxxxxxx wrote:
From: Matthias Brugger <mbrugger@xxxxxxxx>
The driver relies on the compatible string from DT to determine which
FW configuration file it should load. The DTS spec allows for '/' as
part of the compatible string. We change this to '-' so that we will
still be able to load the config file, even when the compatible has a
'/'. This fixes explicitly the firmware loading for
"solidrun,cubox-i/q".
Signed-off-by: Matthias Brugger <mbrugger@xxxxxxxx>
---
Changes in v3:
- use len variable to store length of string (Hans de Goede)
- fix for loop to stop on first NULL-byte (Hans de Goede)
Changes in v2:
- use strscpy instead of strncpy (Hans de Goede)
- use strlen(tmp) + 1 for allocation (Hans de Goede, kernel test robot)
v3 looks good to me:
Reviewed-by: Hans deGoede <hdegoede@xxxxxxxxxx>
Regards,
Hans
.../wireless/broadcom/brcm80211/brcmfmac/of.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
index b886b56a5e5a..a7554265f95f 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/of.c
@@ -17,7 +17,6 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
{
struct brcmfmac_sdio_pd *sdio = &settings->bus.sdio;
struct device_node *root, *np = dev->of_node;
- struct property *prop;
int irq;
u32 irqf;
u32 val;
@@ -25,8 +24,22 @@ void brcmf_of_probe(struct device *dev, enum brcmf_bus_type bus_type,
/* Set board-type to the first string of the machine compatible prop */
root = of_find_node_by_path("/");
if (root) {
- prop = of_find_property(root, "compatible", NULL);
- settings->board_type = of_prop_next_string(prop, NULL);
+ int i, len;
+ char *board_type;
+ const char *tmp;
+
+ of_property_read_string_index(root, "compatible", 0, &tmp);
+
+ /* get rid of '/' in the compatible string to be able to find the FW */
+ len = strlen(tmp) + 1;
+ board_type = devm_kzalloc(dev, len, GFP_KERNEL);
+ strscpy(board_type, tmp, len);
+ for (i = 0; i < board_type[i]; i++) {
+ if (board_type[i] == '/')
+ board_type[i] = '-';
+ }
+ settings->board_type = board_type;
+
of_node_put(root);
}
