diff options
Diffstat (limited to 'recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch deleted file mode 100644 index 4dc1dae..0000000 --- a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0001-imx_sc_thermal-prevent-BUG-with-rt-patch.patch +++ /dev/null @@ -1,53 +0,0 @@ -From 4e6114a23a21db5741375070add8ccc16697db67 Mon Sep 17 00:00:00 2001 -From: Max Krummenacher <max.krummenacher@toradex.com> -Date: Tue, 24 Sep 2019 14:15:50 +0200 -Subject: [PATCH 1/2] imx_sc_thermal: prevent BUG() with rt patch - -With the RT patch applied the kernel prints a BUG backtrace during boot: - -| BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1 - -Prevent this by avoiding the smp_processor_id call and just check both -CPU clusters which may be there in a i.MX8 series SoC. - -Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com> ---- - drivers/thermal/imx_sc_thermal.c | 13 +++++++------ - 1 file changed, 7 insertions(+), 6 deletions(-) - -diff --git a/drivers/thermal/imx_sc_thermal.c b/drivers/thermal/imx_sc_thermal.c -index 8c5049020cd8..51a6c73315ba 100644 ---- a/drivers/thermal/imx_sc_thermal.c -+++ b/drivers/thermal/imx_sc_thermal.c -@@ -58,6 +58,7 @@ sc_ipc_t tsens_ipcHandle; - static int imx_sc_tsens_get_temp(void *data, int *temp) - { - struct imx_sc_sensor *sensor = data; -+ int hw_id; - sc_err_t sciErr; - int16_t celsius; - int8_t tenths; -@@ -65,14 +66,14 @@ static int imx_sc_tsens_get_temp(void *data, int *temp) - sciErr = sc_misc_get_temp(tsens_ipcHandle, sensor->hw_id, - SC_C_TEMP, &celsius, &tenths); - /* -- * if the SS power domain is down, read temp will fail, so -- * we can return the temp of CPU domain instead. -+ * if the SS power domain is down, read temp will fail, -+ * try the temp of the potentially two CPU domains instead. - */ -- if (sciErr != SC_ERR_NONE) { -- sciErr = sc_misc_get_temp(tsens_ipcHandle, -- sensor_hw_id[topology_physical_package_id(smp_processor_id())], -+ hw_id = 0; -+ while (sciErr != SC_ERR_NONE) { -+ sciErr = sc_misc_get_temp(tsens_ipcHandle, sensor_hw_id[hw_id++], - SC_C_TEMP, &celsius, &tenths); -- if (sciErr != SC_ERR_NONE) { -+ if (hw_id > 1) { - pr_err("read temp sensor:%d failed\n", sensor->hw_id); - return -EINVAL; - } --- -2.20.1 - |