[PATCH 3/4] libertas: check for old, unsupported hardware

Holger Schurig
2008-06-05T11:08:47Z

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>

--- linux.orig/drivers/net/wireless/libertas/if_cs.c
+++ linux/drivers/net/wireless/libertas/if_cs.c
@@ -268,6 +268,12 @@
#define IF_CS_SCRATCH_BOOT_OK 0x00
#define IF_CS_SCRATCH_HELPER_OK 0x5a

+/*
+ * Used to detect ancient chips:
+ */
+#define IF_CS_PRODUCT_ID 0x0000001C
+#define IF_CS_CF8385_B1_REV 0x12
+

/********************************************************************/
/* I/O and interrupt handling */
@@ -864,6 +871,12 @@
p_dev->irq.AssignedIRQ, p_dev->io.BasePort1,
p_dev->io.BasePort1 + p_dev->io.NumPorts1 - 1);

+ /* Check if we have a current silicon */
+ if (if_cs_read8(card, IF_CS_PRODUCT_ID) < IF_CS_CF8385_B1_REV) {
+ lbs_pr_err("old chips like 8385 rev B1 aren't supported\n");
+ ret = -ENODEV;
+ goto out2;
+ }

/* Load the firmware early, before calling into libertas.ko */
ret = if_cs_prog_helper(card);