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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2024-05-03 20:15:58 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2024-05-04 19:09:29 +0300
commitc5f597479dfe8d6770d8a823f1f5626ad86c1367 (patch)
tree8ed0bc3687778e541ef957ac5bd3f5a850964901 /drivers/tty
parent1cf8520a1220410bab6b0dcaa31107425f4576df (diff)
downloadlinux-c5f597479dfe8d6770d8a823f1f5626ad86c1367.tar.xz
serial: 8250_exar: Extract cti_board_init_osc_freq() helper
Extract cti_board_init_osc_freq() helper to avoid code duplication. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Tested-by: Parker Newman <pnewman@connecttech.com> Link: https://lore.kernel.org/r/20240503171917.2921250-7-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/8250/8250_exar.c48
1 files changed, 19 insertions, 29 deletions
diff --git a/drivers/tty/serial/8250/8250_exar.c b/drivers/tty/serial/8250/8250_exar.c
index ac373cde7e39..956323e2de4a 100644
--- a/drivers/tty/serial/8250/8250_exar.c
+++ b/drivers/tty/serial/8250/8250_exar.c
@@ -695,7 +695,6 @@ static int cti_read_osc_freq(struct exar8250 *priv, u8 eeprom_offset)
{
u16 lower_word;
u16 upper_word;
- int osc_freq;
lower_word = exar_ee_read(priv, eeprom_offset);
// Check if EEPROM word was blank
@@ -706,10 +705,8 @@ static int cti_read_osc_freq(struct exar8250 *priv, u8 eeprom_offset)
if (upper_word == 0xFFFF)
return -EIO;
- osc_freq = FIELD_PREP(CTI_EE_MASK_OSC_FREQ_LOWER, lower_word) |
- FIELD_PREP(CTI_EE_MASK_OSC_FREQ_UPPER, upper_word);
-
- return osc_freq;
+ return FIELD_PREP(CTI_EE_MASK_OSC_FREQ_LOWER, lower_word) |
+ FIELD_PREP(CTI_EE_MASK_OSC_FREQ_UPPER, upper_word);
}
/**
@@ -890,6 +887,19 @@ static int cti_rs485_config_mpio_tristate(struct uart_port *port,
return cti_tristate_disable(priv, port->port_id);
}
+static void cti_board_init_osc_freq(struct exar8250 *priv, struct pci_dev *pcidev, u8 eeprom_offset)
+{
+ int osc_freq;
+
+ osc_freq = cti_read_osc_freq(priv, eeprom_offset);
+ if (osc_freq <= 0) {
+ dev_warn(&pcidev->dev, "failed to read OSC freq from EEPROM, using default\n");
+ osc_freq = CTI_DEFAULT_PCI_OSC_FREQ;
+ }
+
+ priv->osc_freq = osc_freq;
+}
+
static int cti_port_setup_common(struct exar8250 *priv,
struct pci_dev *pcidev,
int idx, unsigned int offset,
@@ -1095,19 +1105,9 @@ static int cti_board_init_xr17v35x(struct exar8250 *priv,
return 0;
}
-static int cti_board_init_xr17v25x(struct exar8250 *priv,
- struct pci_dev *pcidev)
+static int cti_board_init_xr17v25x(struct exar8250 *priv, struct pci_dev *pcidev)
{
- int osc_freq;
-
- osc_freq = cti_read_osc_freq(priv, CTI_EE_OFF_XR17V25X_OSC_FREQ);
- if (osc_freq < 0) {
- dev_warn(&pcidev->dev,
- "failed to read osc freq from EEPROM, using default\n");
- osc_freq = CTI_DEFAULT_PCI_OSC_FREQ;
- }
-
- priv->osc_freq = osc_freq;
+ cti_board_init_osc_freq(priv, pcidev, CTI_EE_OFF_XR17V25X_OSC_FREQ);
/* enable interrupts on cards that need the "PLX fix" */
switch (pcidev->subsystem_device) {
@@ -1123,19 +1123,9 @@ static int cti_board_init_xr17v25x(struct exar8250 *priv,
return 0;
}
-static int cti_board_init_xr17c15x(struct exar8250 *priv,
- struct pci_dev *pcidev)
+static int cti_board_init_xr17c15x(struct exar8250 *priv, struct pci_dev *pcidev)
{
- int osc_freq;
-
- osc_freq = cti_read_osc_freq(priv, CTI_EE_OFF_XR17C15X_OSC_FREQ);
- if (osc_freq <= 0) {
- dev_warn(&pcidev->dev,
- "failed to read osc freq from EEPROM, using default\n");
- osc_freq = CTI_DEFAULT_PCI_OSC_FREQ;
- }
-
- priv->osc_freq = osc_freq;
+ cti_board_init_osc_freq(priv, pcidev, CTI_EE_OFF_XR17C15X_OSC_FREQ);
/* enable interrupts on cards that need the "PLX fix" */
switch (pcidev->subsystem_device) {