From d9f26748128c73ec6bed2846ca52fb1c2edc3ced Mon Sep 17 00:00:00 2001 From: Axel Lin Date: Sun, 31 Aug 2014 12:44:09 +0800 Subject: [PATCH] spi: fsl: Don't use devm_kzalloc in master->setup callback device_add() expects that any memory allocated via devm_* API is only done in the device's probe function. Fix below boot warning: [ 3.092348] WARNING: at drivers/base/dd.c:286 [ 3.096637] Modules linked in: [ 3.099697] CPU: 0 PID: 25 Comm: kworker/u2:1 Tainted: G W 3.16.1-s3k-drv-999-svn5771_knld-999 #158 [ 3.109610] Workqueue: deferwq deferred_probe_work_func [ 3.114736] task: c787f020 ti: c790c000 task.ti: c790c000 [ 3.120062] NIP: c01df158 LR: c01df144 CTR: 00000000 [ 3.124983] REGS: c790db30 TRAP: 0700 Tainted: G W (3.16.1-s3k-drv-999-svn5771_knld-999) [ 3.134162] MSR: 00029032 CR: 22002082 XER: 20000000 [ 3.140703] [ 3.140703] GPR00: 00000001 c790dbe0 c787f020 00000044 00000054 00000308 c056da0e 20737069 [ 3.140703] GPR08: 33323736 000ebfe0 00000308 000ebfdf 22002082 00000000 c046c5a0 c046c608 [ 3.140703] GPR16: c046c614 c046c620 c046c62c c046c638 c046c648 c046c654 c046c68c c046c6c4 [ 3.140703] GPR24: 00000000 00000000 00000003 c0401aa0 c0596638 c059662c c054e7a8 c7996800 [ 3.170102] NIP [c01df158] driver_probe_device+0xf8/0x334 [ 3.175431] LR [c01df144] driver_probe_device+0xe4/0x334 [ 3.180633] Call Trace: [ 3.183093] [c790dbe0] [c01df144] driver_probe_device+0xe4/0x334 (unreliable) [ 3.190147] [c790dc10] [c01dd15c] bus_for_each_drv+0x7c/0xc0 [ 3.195741] [c790dc40] [c01df5fc] device_attach+0xcc/0xf8 [ 3.201076] [c790dc60] [c01dd6d4] bus_probe_device+0xb4/0xc4 [ 3.206666] [c790dc80] [c01db9f8] device_add+0x270/0x564 [ 3.211923] [c790dcc0] [c0219e84] spi_add_device+0xc0/0x190 [ 3.217427] [c790dce0] [c021a79c] spi_register_master+0x720/0x834 [ 3.223455] [c790dd40] [c021cb48] of_fsl_spi_probe+0x55c/0x614 [ 3.229234] [c790dda0] [c01e0d2c] platform_drv_probe+0x30/0x74 [ 3.234987] [c790ddb0] [c01df18c] driver_probe_device+0x12c/0x334 [ 3.241008] [c790dde0] [c01dd15c] bus_for_each_drv+0x7c/0xc0 [ 3.246602] [c790de10] [c01df5fc] device_attach+0xcc/0xf8 [ 3.251937] [c790de30] [c01dd6d4] bus_probe_device+0xb4/0xc4 [ 3.257536] [c790de50] [c01de9d8] deferred_probe_work_func+0x98/0xe0 [ 3.263816] [c790de70] [c00305b8] process_one_work+0x18c/0x440 [ 3.269577] [c790dea0] [c0030a00] worker_thread+0x194/0x67c [ 3.275105] [c790def0] [c0039198] kthread+0xd0/0xe4 [ 3.279911] [c790df40] [c000c6d0] ret_from_kernel_thread+0x5c/0x64 [ 3.285970] Instruction dump: [ 3.288900] 80de0000 419e01d0 3b7b0038 3c60c046 7f65db78 38635264 48211b99 813f00a0 [ 3.296559] 381f00a0 7d290278 3169ffff 7c0b4910 <0f000000> 93df0044 7fe3fb78 4bfffd4d Reported-by: leroy christophe Signed-off-by: Axel Lin Tested-by: Christophe Leroy Signed-off-by: Mark Brown Cc: stable@vger.kernel.org --- drivers/spi/spi-fsl-espi.c | 15 ++++++++++++--- drivers/spi/spi-fsl-spi.c | 10 +++++++--- 2 files changed, 19 insertions(+), 6 deletions(-) diff --git a/drivers/spi/spi-fsl-espi.c b/drivers/spi/spi-fsl-espi.c index 8ebd724e4c5976..429e111902651b 100644 --- a/drivers/spi/spi-fsl-espi.c +++ b/drivers/spi/spi-fsl-espi.c @@ -452,16 +452,16 @@ static int fsl_espi_setup(struct spi_device *spi) int retval; u32 hw_mode; u32 loop_mode; - struct spi_mpc8xxx_cs *cs = spi->controller_state; + struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi); if (!spi->max_speed_hz) return -EINVAL; if (!cs) { - cs = devm_kzalloc(&spi->dev, sizeof(*cs), GFP_KERNEL); + cs = kzalloc(sizeof(*cs), GFP_KERNEL); if (!cs) return -ENOMEM; - spi->controller_state = cs; + spi_set_ctldata(spi, cs); } mpc8xxx_spi = spi_master_get_devdata(spi->master); @@ -496,6 +496,14 @@ static int fsl_espi_setup(struct spi_device *spi) return 0; } +static void fsl_espi_cleanup(struct spi_device *spi) +{ + struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi); + + kfree(cs); + spi_set_ctldata(spi, NULL); +} + void fsl_espi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events) { struct fsl_espi_reg *reg_base = mspi->reg_base; @@ -605,6 +613,7 @@ static struct spi_master * fsl_espi_probe(struct device *dev, master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 16); master->setup = fsl_espi_setup; + master->cleanup = fsl_espi_cleanup; mpc8xxx_spi = spi_master_get_devdata(master); mpc8xxx_spi->spi_do_one_msg = fsl_espi_do_one_msg; diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c index 9452f6740997b1..590f31bc0aba17 100644 --- a/drivers/spi/spi-fsl-spi.c +++ b/drivers/spi/spi-fsl-spi.c @@ -425,16 +425,16 @@ static int fsl_spi_setup(struct spi_device *spi) struct fsl_spi_reg *reg_base; int retval; u32 hw_mode; - struct spi_mpc8xxx_cs *cs = spi->controller_state; + struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi); if (!spi->max_speed_hz) return -EINVAL; if (!cs) { - cs = devm_kzalloc(&spi->dev, sizeof(*cs), GFP_KERNEL); + cs = kzalloc(sizeof(*cs), GFP_KERNEL); if (!cs) return -ENOMEM; - spi->controller_state = cs; + spi_set_ctldata(spi, cs); } mpc8xxx_spi = spi_master_get_devdata(spi->master); @@ -496,9 +496,13 @@ static int fsl_spi_setup(struct spi_device *spi) static void fsl_spi_cleanup(struct spi_device *spi) { struct mpc8xxx_spi *mpc8xxx_spi = spi_master_get_devdata(spi->master); + struct spi_mpc8xxx_cs *cs = spi_get_ctldata(spi); if (mpc8xxx_spi->type == TYPE_GRLIB && gpio_is_valid(spi->cs_gpio)) gpio_free(spi->cs_gpio); + + kfree(cs); + spi_set_ctldata(spi, NULL); } static void fsl_spi_cpu_irq(struct mpc8xxx_spi *mspi, u32 events)