Check if PM Capability does not exists and return early which follows
the usual error handling pattern.
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx>
---
.../wireless/realtek/rtlwifi/rtl8821ae/hw.c | 45 ++++++++++---------
1 file changed, 23 insertions(+), 22 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
index 6ae37d61a2a2..53cfeed0b030 100644
--- a/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
+++ b/drivers/net/wireless/realtek/rtlwifi/rtl8821ae/hw.c
@@ -2305,30 +2305,31 @@ static void _rtl8821ae_clear_pci_pme_status(struct ieee80211_hw *hw)
}
} while (cnt++ < 200);
- if (cap_id == 0x01) {
- /* Get the PM CSR (Control/Status Register),
- * The PME_Status is located at PM Capatibility offset 5, bit 7
- */
- pci_read_config_byte(rtlpci->pdev, cap_pointer + 5, &pmcs_reg);
-
- if (pmcs_reg & BIT(7)) {
- /* Clear PME_Status with write */
- pci_write_config_byte(rtlpci->pdev, cap_pointer + 5,
- pmcs_reg);
- /* Read it back to check */
- pci_read_config_byte(rtlpci->pdev, cap_pointer + 5,
- &pmcs_reg);
- rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
- "Clear PME status 0x%2x to 0x%2x\n",
- cap_pointer + 5, pmcs_reg);
- } else {
- rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
- "PME status(0x%2x) = 0x%2x\n",
- cap_pointer + 5, pmcs_reg);
- }
- } else {
+ if (cap_id != 0x01) {
rtl_dbg(rtlpriv, COMP_INIT, DBG_WARNING,
"Cannot find PME Capability\n");
+ return;
+ }
+
+ /* Get the PM CSR (Control/Status Register),
+ * The PME_Status is located at PM Capatibility offset 5, bit 7
+ */
+ pci_read_config_byte(rtlpci->pdev, cap_pointer + 5, &pmcs_reg);
+
+ if (pmcs_reg & BIT(7)) {
+ /* Clear PME_Status with write */
+ pci_write_config_byte(rtlpci->pdev, cap_pointer + 5,
+ pmcs_reg);
+ /* Read it back to check */
+ pci_read_config_byte(rtlpci->pdev, cap_pointer + 5,
+ &pmcs_reg);
+ rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
+ "Clear PME status 0x%2x to 0x%2x\n",
+ cap_pointer + 5, pmcs_reg);
+ } else {
+ rtl_dbg(rtlpriv, COMP_INIT, DBG_DMESG,
+ "PME status(0x%2x) = 0x%2x\n",
+ cap_pointer + 5, pmcs_reg);
}
}
--
2.30.2
