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author | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-09-04 19:01:23 +0200 |
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committer | Álvaro Fernández Rojas <noltari@gmail.com> | 2019-09-04 19:02:48 +0200 |
commit | 662394fb30fdbcc89ec387918714aebee6868a9f (patch) | |
tree | c308c5f1a650abf9d9ccbb2a1747469a0d8570c0 /target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch | |
parent | 99a5e285887c4a10aaf06d8e01fae0707995da00 (diff) | |
download | upstream-662394fb30fdbcc89ec387918714aebee6868a9f.tar.gz upstream-662394fb30fdbcc89ec387918714aebee6868a9f.tar.bz2 upstream-662394fb30fdbcc89ec387918714aebee6868a9f.zip |
brcm2708: update to latest patches from RPi foundation
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch')
-rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch b/target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch new file mode 100644 index 0000000000..cf9e3a09ec --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch @@ -0,0 +1,38 @@ +From 667103fc71cb04bd8b53ad3d46e1dc3c01cc47c2 Mon Sep 17 00:00:00 2001 +From: Lukas Wunner <lukas@wunner.de> +Date: Sat, 19 Jan 2019 09:00:26 +0100 +Subject: [PATCH 384/782] bcm2835-mmc: Fix duplicate free_irq() on remove + +The BCM2835 MMC host driver requests its interrupt as a device-managed +resource, so the interrupt is automatically freed after the driver is +unbound. + +However on driver unbind, bcm2835_mmc_remove() frees the interrupt +explicitly to avoid invocation of the interrupt handler after driver +structures have been torn down. + +The interrupt is thus freed twice, leading to a WARN splat in +__free_irq(). Fix by not requesting the interrupt as a device-managed +resource. + +Signed-off-by: Lukas Wunner <lukas@wunner.de> +Cc: Frank Pavlic <f.pavlic@kunbus.de> +--- + drivers/mmc/host/bcm2835-mmc.c | 6 +++--- + 1 file changed, 3 insertions(+), 3 deletions(-) + +--- a/drivers/mmc/host/bcm2835-mmc.c ++++ b/drivers/mmc/host/bcm2835-mmc.c +@@ -1389,9 +1389,9 @@ static int bcm2835_mmc_add_host(struct b + init_waitqueue_head(&host->buf_ready_int); + + bcm2835_mmc_init(host, 0); +- ret = devm_request_threaded_irq(dev, host->irq, bcm2835_mmc_irq, +- bcm2835_mmc_thread_irq, IRQF_SHARED, +- mmc_hostname(mmc), host); ++ ret = request_threaded_irq(host->irq, bcm2835_mmc_irq, ++ bcm2835_mmc_thread_irq, IRQF_SHARED, ++ mmc_hostname(mmc), host); + if (ret) { + dev_err(dev, "Failed to request IRQ %d: %d\n", host->irq, ret); + goto untasklet; |