Commit 5bc6bb60 authored by Esben Haabendal's avatar Esben Haabendal Committed by Miquel Raynal

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: ef347c0c ("mtd: rawnand: gpmi: Implement exec_op")
Cc: stable@vger.kernel.org
Signed-off-by: default avatarEsben Haabendal <esben@geanix.com>
Acked-by: default avatarHan Xu <han.xu@nxp.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
parent da2ef812
...@@ -148,6 +148,10 @@ static int gpmi_init(struct gpmi_nand_data *this) ...@@ -148,6 +148,10 @@ static int gpmi_init(struct gpmi_nand_data *this)
struct resources *r = &this->resources; struct resources *r = &this->resources;
int ret; int ret;
ret = pm_runtime_get_sync(this->dev);
if (ret < 0)
return ret;
ret = gpmi_reset_block(r->gpmi_regs, false); ret = gpmi_reset_block(r->gpmi_regs, false);
if (ret) if (ret)
goto err_out; goto err_out;
...@@ -179,8 +183,9 @@ static int gpmi_init(struct gpmi_nand_data *this) ...@@ -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); writel(BM_GPMI_CTRL1_DECOUPLE_CS, r->gpmi_regs + HW_GPMI_CTRL1_SET);
return 0;
err_out: err_out:
pm_runtime_mark_last_busy(this->dev);
pm_runtime_put_autosuspend(this->dev);
return ret; return ret;
} }
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment