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cnss2: Skip link down recovery if link has been recovered by retry

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There is no need to proceed link down recovery if link has been recovered
by retries during power on sequence.

Change-Id: I876f2e239b519d4230b5c115cdc05ff7650f5cd1
Signed-off-by: Yue Ma <yuem@codeaurora.org>
This commit is contained in:
Yue Ma 2020-03-31 16:28:46 -07:00
commit cd68afdcc7
5 changed files with 22 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

15
drivers/net/wireless/cnss2/bus.c
View file

@ -418,6 +418,21 @@ int cnss_bus_is_device_down(struct cnss_plat_data *plat_priv)
}
}
int cnss_bus_check_link_status(struct cnss_plat_data *plat_priv)
{
if (!plat_priv)
return -ENODEV;
switch (plat_priv->bus_type) {
case CNSS_BUS_PCI:
return cnss_pci_check_link_status(plat_priv->bus_priv);
default:
cnss_pr_dbg("Unsupported bus type: %d\n",
plat_priv->bus_type);
return 0;
}
}
int cnss_bus_debug_reg_read(struct cnss_plat_data *plat_priv, u32 offset,
u32 *val)
{

1
drivers/net/wireless/cnss2/bus.h
View file

@ -48,6 +48,7 @@ int cnss_bus_call_driver_modem_status(struct cnss_plat_data *plat_priv,
int cnss_bus_update_status(struct cnss_plat_data *plat_priv,
enum cnss_driver_status status);
int cnss_bus_is_device_down(struct cnss_plat_data *plat_priv);
int cnss_bus_check_link_status(struct cnss_plat_data *plat_priv);
int cnss_bus_debug_reg_read(struct cnss_plat_data *plat_priv, u32 offset,
u32 *val);
int cnss_bus_debug_reg_write(struct cnss_plat_data *plat_priv, u32 offset,

4
drivers/net/wireless/cnss2/main.c
View file

@ -996,6 +996,10 @@ static int cnss_do_recovery(struct cnss_plat_data *plat_priv,
switch (reason) {
case CNSS_REASON_LINK_DOWN:
if (!cnss_bus_check_link_status(plat_priv)) {
cnss_pr_dbg("Skip link down recovery as link is already up\n");
return 0;
}
if (test_bit(LINK_DOWN_SELF_RECOVERY,
&plat_priv->ctrl_params.quirks))
goto self_recovery;

2
drivers/net/wireless/cnss2/pci.c
View file

@ -374,7 +374,7 @@ static struct cnss_bus_bw_cfg cnss_bus_bw_table[] = {
#define PCIE_REG_SIZE ARRAY_SIZE(pcie_reg_access_seq)
#define WLAON_REG_SIZE ARRAY_SIZE(wlaon_reg_access_seq)
static int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)
int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv)
{
u16 device_id;

1
drivers/net/wireless/cnss2/pci.h
View file

@ -161,6 +161,7 @@ static inline int cnss_pci_get_drv_connected(void *bus_priv)
return atomic_read(&pci_priv->drv_connected);
}
int cnss_pci_check_link_status(struct cnss_pci_data *pci_priv);
int cnss_suspend_pci_link(struct cnss_pci_data *pci_priv);
int cnss_resume_pci_link(struct cnss_pci_data *pci_priv);
int cnss_pci_init(struct cnss_plat_data *plat_priv);