From 662394fb30fdbcc89ec387918714aebee6868a9f Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= Date: Wed, 4 Sep 2019 19:01:23 +0200 Subject: brcm2708: update to latest patches from RPi foundation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Álvaro Fernández Rojas --- ...2835-mmc-Fix-duplicate-free_irq-on-remove.patch | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch (limited to 'target/linux/brcm2708/patches-4.19/950-0384-bcm2835-mmc-Fix-duplicate-free_irq-on-remove.patch') 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 +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 +Cc: Frank Pavlic +--- + 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; -- cgit v1.2.3