[PATCH v2] wilc1000: Convert module-global "isinit" to device-specific variable
From: David Mosberger-Tang <hidden>
Date: 2021-08-28 15:19:13
Move static "isinit" variable to wilc_spi structure to allow multiple WILC1000 devices per machine. Signed-off-by: David Mosberger-Tang <redacted> --- drivers/net/wireless/microchip/wilc1000/spi.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/net/wireless/microchip/wilc1000/spi.c b/drivers/net/wireless/microchip/wilc1000/spi.c
index 8b180c29d682..dd481dc0b5ce 100644
--- a/drivers/net/wireless/microchip/wilc1000/spi.c
+++ b/drivers/net/wireless/microchip/wilc1000/spi.c@@ -39,6 +39,7 @@ MODULE_PARM_DESC(enable_crc16, #define WILC_SPI_RSP_HDR_EXTRA_DATA 8 struct wilc_spi { + bool isinit; /* true if SPI protocol has been configured */ bool probing_crc; /* true if we're probing chip's CRC config */ bool crc7_enabled; /* true if crc7 is currently enabled */ bool crc16_enabled; /* true if crc16 is currently enabled */
@@ -908,15 +909,15 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) struct wilc_spi *spi_priv = wilc->bus_data; u32 reg; u32 chipid; - static int isinit; int ret, i; - if (isinit) { + if (spi_priv->isinit) { + /* Confirm we can read chipid register without error: */ ret = wilc_spi_read_reg(wilc, WILC_CHIPID, &chipid); - if (ret) - dev_err(&spi->dev, "Fail cmd read chip id...\n"); + if (ret == 0) + return 0; - return ret; + dev_err(&spi->dev, "Fail cmd read chip id...\n"); } /*
@@ -974,7 +975,7 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) spi_priv->probing_crc = false; /* - * make sure can read back chip id correctly + * make sure can read chip id without protocol error */ ret = wilc_spi_read_reg(wilc, WILC_CHIPID, &chipid); if (ret) {
@@ -982,7 +983,7 @@ static int wilc_spi_init(struct wilc *wilc, bool resume) return ret; } - isinit = 1; + spi_priv->isinit = true; return 0; }
--
2.25.1