From 97eaff578bf79e41d7efa50046ba2acc95ac4cd2 Mon Sep 17 00:00:00 2001 From: Ajay Singh Date: Tue, 25 Sep 2018 11:53:36 +0530 Subject: [PATCH] staging: wilc1000: avoid use of 'g_sdio' static variable Instead of using static variable 'g_sdio' move it as part of 'wilc' struct. Also allocating the memory in the probe function and free during deinitialization. Signed-off-by: Ajay Singh Signed-off-by: Greg Kroah-Hartman --- drivers/staging/wilc1000/linux_wlan.c | 1 + drivers/staging/wilc1000/wilc_sdio.c | 54 +++++++++++++++++---------- drivers/staging/wilc1000/wilc_wfi_netdevice.h | 1 + 3 files changed, 36 insertions(+), 20 deletions(-) diff --git a/drivers/staging/wilc1000/linux_wlan.c b/drivers/staging/wilc1000/linux_wlan.c index 1b5406a..d00ff983 100644 --- a/drivers/staging/wilc1000/linux_wlan.c +++ b/drivers/staging/wilc1000/linux_wlan.c @@ -1034,6 +1034,7 @@ void wilc_netdev_cleanup(struct wilc *wilc) flush_workqueue(wilc->hif_workqueue); destroy_workqueue(wilc->hif_workqueue); wilc_wlan_cfg_deinit(wilc); + kfree(wilc->bus_data); kfree(wilc); } EXPORT_SYMBOL_GPL(wilc_netdev_cleanup); diff --git a/drivers/staging/wilc1000/wilc_sdio.c b/drivers/staging/wilc1000/wilc_sdio.c index b2080d8..7ef047c 100644 --- a/drivers/staging/wilc1000/wilc_sdio.c +++ b/drivers/staging/wilc1000/wilc_sdio.c @@ -30,7 +30,6 @@ struct wilc_sdio { int has_thrpt_enh3; }; -static struct wilc_sdio g_sdio; static const struct wilc_hif_func wilc_hif_sdio; static int sdio_write_reg(struct wilc *wilc, u32 addr, u32 data); @@ -109,6 +108,11 @@ static int linux_sdio_probe(struct sdio_func *func, struct wilc *wilc; int ret; struct gpio_desc *gpio = NULL; + struct wilc_sdio *sdio_priv; + + sdio_priv = kzalloc(sizeof(*sdio_priv), GFP_KERNEL); + if (!sdio_priv) + return -ENOMEM; if (IS_ENABLED(CONFIG_WILC1000_HW_OOB_INTR)) { gpio = gpiod_get(&func->dev, "irq", GPIOD_IN); @@ -124,9 +128,11 @@ static int linux_sdio_probe(struct sdio_func *func, ret = wilc_netdev_init(&wilc, &func->dev, HIF_SDIO, &wilc_hif_sdio); if (ret) { dev_err(&func->dev, "Couldn't initialize netdev\n"); + kfree(sdio_priv); return ret; } sdio_set_drvdata(func, wilc); + wilc->bus_data = sdio_priv; wilc->dev = &func->dev; wilc->gpio_irq = gpio; @@ -381,6 +387,7 @@ fail: static int sdio_write_reg(struct wilc *wilc, u32 addr, u32 data) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv = wilc->bus_data; int ret; cpu_to_le32s(&data); @@ -415,7 +422,7 @@ static int sdio_write_reg(struct wilc *wilc, u32 addr, u32 data) cmd.increment = 1; cmd.count = 4; cmd.buffer = (u8 *)&data; - cmd.block_size = g_sdio.block_size; + cmd.block_size = sdio_priv->block_size; ret = wilc_sdio_cmd53(wilc, &cmd); if (ret) { dev_err(&func->dev, @@ -434,7 +441,8 @@ fail: static int sdio_write(struct wilc *wilc, u32 addr, u8 *buf, u32 size) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); - u32 block_size = g_sdio.block_size; + struct wilc_sdio *sdio_priv = wilc->bus_data; + u32 block_size = sdio_priv->block_size; struct sdio_cmd53 cmd; int nblk, nleft, ret; @@ -523,6 +531,7 @@ fail: static int sdio_read_reg(struct wilc *wilc, u32 addr, u32 *data) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv = wilc->bus_data; int ret; if (addr >= 0xf0 && addr <= 0xff) { @@ -553,7 +562,7 @@ static int sdio_read_reg(struct wilc *wilc, u32 addr, u32 *data) cmd.count = 4; cmd.buffer = (u8 *)data; - cmd.block_size = g_sdio.block_size; + cmd.block_size = sdio_priv->block_size; ret = wilc_sdio_cmd53(wilc, &cmd); if (ret) { dev_err(&func->dev, @@ -574,7 +583,8 @@ fail: static int sdio_read(struct wilc *wilc, u32 addr, u8 *buf, u32 size) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); - u32 block_size = g_sdio.block_size; + struct wilc_sdio *sdio_priv = wilc->bus_data; + u32 block_size = sdio_priv->block_size; struct sdio_cmd53 cmd; int nblk, nleft, ret; @@ -674,13 +684,14 @@ static int sdio_deinit(struct wilc *wilc) static int sdio_init(struct wilc *wilc, bool resume) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv = wilc->bus_data; struct sdio_cmd52 cmd; int loop, ret; u32 chipid; if (!resume) { - memset(&g_sdio, 0, sizeof(struct wilc_sdio)); - g_sdio.irq_gpio = wilc->dev_irq_num; + memset(sdio_priv, 0, sizeof(struct wilc_sdio)); + sdio_priv->irq_gpio = wilc->dev_irq_num; } /** @@ -704,7 +715,7 @@ static int sdio_init(struct wilc *wilc, bool resume) dev_err(&func->dev, "Fail cmd 52, set func 0 block size...\n"); goto fail; } - g_sdio.block_size = WILC_SDIO_BLOCK_SIZE; + sdio_priv->block_size = WILC_SDIO_BLOCK_SIZE; /** * enable func1 IO @@ -778,11 +789,11 @@ static int sdio_init(struct wilc *wilc, bool resume) } dev_err(&func->dev, "chipid (%08x)\n", chipid); if ((chipid & 0xfff) > 0x2a0) - g_sdio.has_thrpt_enh3 = 1; + sdio_priv->has_thrpt_enh3 = 1; else - g_sdio.has_thrpt_enh3 = 0; + sdio_priv->has_thrpt_enh3 = 0; dev_info(&func->dev, "has_thrpt_enh3 = %d...\n", - g_sdio.has_thrpt_enh3); + sdio_priv->has_thrpt_enh3); } return 1; @@ -820,6 +831,7 @@ static int sdio_read_size(struct wilc *wilc, u32 *size) static int sdio_read_int(struct wilc *wilc, u32 *int_status) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv = wilc->bus_data; u32 tmp; struct sdio_cmd52 cmd; @@ -828,7 +840,7 @@ static int sdio_read_int(struct wilc *wilc, u32 *int_status) /** * Read IRQ flags **/ - if (!g_sdio.irq_gpio) { + if (!sdio_priv->irq_gpio) { int i; cmd.function = 1; @@ -848,7 +860,7 @@ static int sdio_read_int(struct wilc *wilc, u32 *int_status) tmp |= INT_4; if (cmd.data & BIT(6)) tmp |= INT_5; - for (i = g_sdio.nint; i < MAX_NUM_INT; i++) { + for (i = sdio_priv->nint; i < MAX_NUM_INT; i++) { if ((tmp >> (IRG_FLAGS_OFFSET + i)) & 0x1) { dev_err(&func->dev, "Unexpected interrupt (1) : tmp=%x, data=%x\n", @@ -877,13 +889,14 @@ static int sdio_read_int(struct wilc *wilc, u32 *int_status) static int sdio_clear_int_ext(struct wilc *wilc, u32 val) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv = wilc->bus_data; int ret; int vmm_ctl; - if (g_sdio.has_thrpt_enh3) { + if (sdio_priv->has_thrpt_enh3) { u32 reg; - if (g_sdio.irq_gpio) { + if (sdio_priv->irq_gpio) { u32 flags; flags = val & (BIT(MAX_NUN_INT_THRPT_ENH2) - 1); @@ -919,7 +932,7 @@ static int sdio_clear_int_ext(struct wilc *wilc, u32 val) } return 1; } - if (g_sdio.irq_gpio) { + if (sdio_priv->irq_gpio) { /* has_thrpt_enh2 uses register 0xf8 to clear interrupts. */ /* * Cannot clear multiple interrupts. @@ -932,7 +945,7 @@ static int sdio_clear_int_ext(struct wilc *wilc, u32 val) int i; ret = 1; - for (i = 0; i < g_sdio.nint; i++) { + for (i = 0; i < sdio_priv->nint; i++) { if (flags & 1) { struct sdio_cmd52 cmd; @@ -956,7 +969,7 @@ static int sdio_clear_int_ext(struct wilc *wilc, u32 val) } if (!ret) goto fail; - for (i = g_sdio.nint; i < MAX_NUM_INT; i++) { + for (i = sdio_priv->nint; i < MAX_NUM_INT; i++) { if (flags & 1) dev_err(&func->dev, "Unexpected interrupt cleared %d...\n", @@ -1001,6 +1014,7 @@ fail: static int sdio_sync_ext(struct wilc *wilc, int nint) { struct sdio_func *func = dev_to_sdio_func(wilc->dev); + struct wilc_sdio *sdio_priv = wilc->bus_data; u32 reg; if (nint > MAX_NUM_INT) { @@ -1013,7 +1027,7 @@ static int sdio_sync_ext(struct wilc *wilc, int nint) return 0; } - g_sdio.nint = nint; + sdio_priv->nint = nint; /** * Disable power sequencer @@ -1029,7 +1043,7 @@ static int sdio_sync_ext(struct wilc *wilc, int nint) return 0; } - if (g_sdio.irq_gpio) { + if (sdio_priv->irq_gpio) { u32 reg; int ret, i; diff --git a/drivers/staging/wilc1000/wilc_wfi_netdevice.h b/drivers/staging/wilc1000/wilc_wfi_netdevice.h index 484c265..4ba5887 100644 --- a/drivers/staging/wilc1000/wilc_wfi_netdevice.h +++ b/drivers/staging/wilc1000/wilc_wfi_netdevice.h @@ -205,6 +205,7 @@ struct wilc { struct workqueue_struct *hif_workqueue; enum chip_ps_states chip_ps_state; struct wilc_cfg cfg; + void *bus_data; }; struct wilc_wfi_mon_priv { -- 2.7.4