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| author | Esben Haabendal <esben@geanix.com> | 2020-01-17 21:05:36 +0100 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2020-01-17 22:45:07 +0100 |
| commit | 5bc6bb603b4d0c8802af75e4932232683ab2d761 (patch) | |
| tree | 21b6dd50cf941f7639d3a9f55c036ba24c5556f3 | |
| parent | da2ef8124f20b4ce18d1d3d24fc7b88e687e10bb (diff) | |
| download | linux-5bc6bb603b4d0c8802af75e4932232683ab2d761.tar.bz2 | |
mtd: rawnand: gpmi: Fix suspend/resume problem
On system resume, the gpmi clock must be enabled before accessing gpmi
block. Without this, resume causes something like
[ 661.348790] gpmi_reset_block(5cbb0f7e): module reset timeout
[ 661.348889] gpmi-nand 1806000.gpmi-nand: Error setting GPMI : -110
[ 661.348928] PM: dpm_run_callback(): platform_pm_resume+0x0/0x44 returns -110
[ 661.348961] PM: Device 1806000.gpmi-nand failed to resume: error -110
Fixes: ef347c0cfd61 ("mtd: rawnand: gpmi: Implement exec_op")
Cc: stable@vger.kernel.org
Signed-off-by: Esben Haabendal <esben@geanix.com>
Acked-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
| -rw-r--r-- | drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c index 334fe3130285..879df8402446 100644 --- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c @@ -148,6 +148,10 @@ static int gpmi_init(struct gpmi_nand_data *this) struct resources *r = &this->resources; int ret; + ret = pm_runtime_get_sync(this->dev); + if (ret < 0) + return ret; + ret = gpmi_reset_block(r->gpmi_regs, false); if (ret) goto err_out; @@ -179,8 +183,9 @@ static int gpmi_init(struct gpmi_nand_data *this) */ writel(BM_GPMI_CTRL1_DECOUPLE_CS, r->gpmi_regs + HW_GPMI_CTRL1_SET); - return 0; err_out: + pm_runtime_mark_last_busy(this->dev); + pm_runtime_put_autosuspend(this->dev); return ret; } |