Hi Kevin,
I think you are right, I don't have a good enough understanding to
make this work so please disregard the patch. I will take on
Sebastian's advice and do some testing with 'threadirqs' parameter
enabled in standard kernel to see if I can reproduce my original issue
there. I'm hoping Jerome might also be able to help with some time to
find proper solution.
Many Thanks,
Brad.
On 29/09/2020 10:35 am, Kevin Hilman wrote:
Brad Harper <bjharper@xxxxxxxxx> writes:
---
drivers/mmc/host/meson-gx-mmc.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
This patch still needs changelog summarizing the problem and what is
being fixed by the patch. Most of what's in the cover letter belongs
here.
The cover letter can be used to describe the history/background that you
don't want in the patch itself. Alternatviely, you could include that
information in the a single patch email also because everything after
the "---" line does not end up in git history.
diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c
index 08a3b1c05..3ba8f988d 100644
--- a/drivers/mmc/host/meson-gx-mmc.c
+++ b/drivers/mmc/host/meson-gx-mmc.c
@@ -146,6 +146,7 @@ struct sd_emmc_desc {
};
struct meson_host {
+ spinlock_t lock;
struct device *dev;
struct meson_mmc_data *data;
struct mmc_host *mmc;
@@ -1051,6 +1052,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
host->mmc = mmc;
host->dev = &pdev->dev;
dev_set_drvdata(&pdev->dev, host);
+ spin_lock_init(&host->lock);
I'm confused about what this lock is intended to do. You init it here,
but it's never used anywhere.
/* The G12A SDIO Controller needs an SRAM bounce buffer */
host->dram_access_quirk = device_property_read_bool(&pdev->dev,
@@ -1139,7 +1141,7 @@ static int meson_mmc_probe(struct platform_device *pdev)
host->regs + SD_EMMC_IRQ_EN);
ret = request_threaded_irq(host->irq, meson_mmc_irq,
- meson_mmc_irq_thread, IRQF_ONESHOT,
+ meson_mmc_irq_thread, 0,
dev_name(&pdev->dev), host);
if (ret)
goto err_init_clk;
Kevin
