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wifi: ralink: RT2X00: init EEPROM properly

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I have an hostapd setup with a
01:00.0 Network controller: Ralink corp. RT2790 Wireless 802.11n 1T/2R PCIe

The setup work fine on 6.18.26-gentoo
It breaks on 6.18.33-gentoo (and still broken on 6.18.37)

I found an hint in dmesg:
On 6.18.26-gentoo I see:
May 31 15:48:45 trash01 kernel: ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0003 detected
On 6.18.33-gentoo I see:
May 31 15:22:57 trash01 kernel: ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0006 detected

The RF chipset seems badly detected.

The problem was the EEPROM which was badly initialized.
Probably the origin was in some PCI change but unfortunately I couldn't play
to bisect/reboot often the board with this card to do it.

Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Link: https://patch.msgid.link/20260703134932.3786771-1-clabbe@baylibre.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Corentin Labbe 2026-07-03 13:49:32 +00:00 committed by Johannes Berg
parent 2b0eab425e
commit 0a2581cbae
4 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/ralink/rt2x00/rt2400pci.c
View File

@ -1429,7 +1429,7 @@ static irqreturn_t rt2400pci_interrupt(int irq, void *dev_instance)
*/
static int rt2400pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
{
struct eeprom_93cx6 eeprom;
struct eeprom_93cx6 eeprom = {};
u32 reg;
u16 word;
u8 *mac;

2
drivers/net/wireless/ralink/rt2x00/rt2500pci.c
View File

@ -1555,7 +1555,7 @@ static irqreturn_t rt2500pci_interrupt(int irq, void *dev_instance)
*/
static int rt2500pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
{
struct eeprom_93cx6 eeprom;
struct eeprom_93cx6 eeprom = {};
u32 reg;
u16 word;
u8 *mac;

2
drivers/net/wireless/ralink/rt2x00/rt2800pci.c
View File

@ -108,7 +108,7 @@ static void rt2800pci_eepromregister_write(struct eeprom_93cx6 *eeprom)
static int rt2800pci_read_eeprom_pci(struct rt2x00_dev *rt2x00dev)
{
struct eeprom_93cx6 eeprom;
struct eeprom_93cx6 eeprom = {};
u32 reg;
reg = rt2x00mmio_register_read(rt2x00dev, E2PROM_CSR);

2
drivers/net/wireless/ralink/rt2x00/rt61pci.c
View File

@ -2298,7 +2298,7 @@ static irqreturn_t rt61pci_interrupt(int irq, void *dev_instance)
*/
static int rt61pci_validate_eeprom(struct rt2x00_dev *rt2x00dev)
{
struct eeprom_93cx6 eeprom;
struct eeprom_93cx6 eeprom = {};
u32 reg;
u16 word;
u8 *mac;