brcmfmac: limit hex dump on fwil.

When debug is turned on for fwil then the whole data buffer is
dumped. In some cases this gives excessive amount of debug. With
this patch the dumps are limited to 64 bytes.

Reviewed-by: Arend Van Spriel <arend@broadcom.com>
Signed-off-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Franky Lin <frankyl@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/brcm80211/brcmfmac/fwil.c

@@ -29,6 +29,9 @@
 #include "fwil.h"
 
 
+#define MAX_HEX_DUMP_LEN	64
+
+
 static s32
 brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
 {
@@ -64,7 +67,8 @@ brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
 	mutex_lock(&ifp->drvr->proto_block);
 
 	brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len);
-	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
+	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
+			   min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
 
 	err = brcmf_fil_cmd_data(ifp, cmd, data, len, true);
 	mutex_unlock(&ifp->drvr->proto_block);
@@ -81,7 +85,8 @@ brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
 	err = brcmf_fil_cmd_data(ifp, cmd, data, len, false);
 
 	brcmf_dbg(FIL, "cmd=%d, len=%d\n", cmd, len);
-	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
+	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
+			   min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
 
 	mutex_unlock(&ifp->drvr->proto_block);
 
@@ -147,7 +152,8 @@ brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, void *data,
 	mutex_lock(&drvr->proto_block);
 
 	brcmf_dbg(FIL, "name=%s, len=%d\n", name, len);
-	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
+	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
+			   min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
 
 	buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
 				    sizeof(drvr->proto_buf));
@@ -186,7 +192,8 @@ brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data,
 	}
 
 	brcmf_dbg(FIL, "name=%s, len=%d\n", name, len);
-	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
+	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
+			   min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
 
 	mutex_unlock(&drvr->proto_block);
 	return err;
@@ -268,7 +275,8 @@ brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name,
 	mutex_lock(&drvr->proto_block);
 
 	brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len);
-	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
+	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
+			   min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
 
 	buflen = brcmf_create_bsscfg(ifp->bssidx, name, data, len,
 				     drvr->proto_buf, sizeof(drvr->proto_buf));
@@ -306,7 +314,8 @@ brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name,
 		brcmf_dbg(ERROR, "Creating bsscfg failed\n");
 	}
 	brcmf_dbg(FIL, "bssidx=%d, name=%s, len=%d\n", ifp->bssidx, name, len);
-	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data, len, "data");
+	brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
+			   min_t(uint, len, MAX_HEX_DUMP_LEN), "data");
 
 	mutex_unlock(&drvr->proto_block);
 	return err;