f5919b65d4
Patch generation process: - rebase rpi/rpi-4.14.y on v4.14.89 from linux-stable - git format-patch v4.14.89 Patches skipped during rebase: - lan78xx: Read MAC address from DT if present - lan78xx: Enable LEDs and auto-negotiation - Revert "softirq: Let ksoftirqd do its job" - sc16is7xx: Fix for multi-channel stall - lan78xx: Ignore DT MAC address if already valid - lan78xx: Simple patch to prevent some crashes - tcp_write_queue_purge clears all the SKBs in the write queue - Revert "lan78xx: Simple patch to prevent some crashes" - lan78xx: Connect phy early - Arm: mm: ftrace: Only set text back to ro after kernel has been marked ro - Revert "Revert "softirq: Let ksoftirqd do its job"" - ASoC: cs4265: SOC_SINGLE register value error fix - Revert "ASoC: cs4265: SOC_SINGLE register value error fix" - Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends" - Revert "Revert "net: pskb_trim_rcsum() and CHECKSUM_COMPLETE are friends"" Patches dropped after rebase: - net: Add non-mainline source for rtl8192cu wlan - net: Fix rtl8192cu build errors on other platforms - brcm: adds support for BCM43341 wifi - brcmfmac: Mute expected startup 'errors' - ARM64: Fix build break for RTL8187/RTL8192CU wifi - ARM64: Enable RTL8187/RTL8192CU wifi in build config - This is the driver for Sony CXD2880 DVB-T2/T tuner + demodulator - brcmfmac: add CLM download support - brcmfmac: request_firmware_direct is quieter - Sets the BCDC priority to constant 0 - brcmfmac: Disable ARP offloading when promiscuous - brcmfmac: Avoid possible out-of-bounds read - brcmfmac: Delete redundant length check - net: rtl8192cu: Normalize indentation - net: rtl8192cu: Fix implicit fallthrough warnings - Revert "Sets the BCDC priority to constant 0" - media: cxd2880: Bump to match 4.18.y version - media: cxd2880-spi: Bump to match 4.18.y version - Revert "mm: alloc_contig: re-allow CMA to compact FS pages" - Revert "Revert "mm: alloc_contig: re-allow CMA to compact FS pages"" - cxd2880: CXD2880_SPI_DRV should select DVB_CXD2880 with MEDIA_SUBDRV_AUTOSELECT - 950-0421-HID-hid-bigbenff-driver-for-BigBen-Interactive-PS3OF.patch - 950-0453-Add-hid-bigbenff-to-list-of-have_special_driver-for-.patch Make I2C built-in instead of modular as in upstream defconfig; also the easiest way to get MFD_ARIZONA enabled, which is required by kmod-sound-soc-rpi-cirrus. Add missing compatible strings from 4.9/960-add-rasbperrypi-compatible.patch, using upstream names for compute modules. Add extra patch to enable the LEDs on lan78xx. Compile-tested: bcm2708, bcm2709, bcm2710 (with CONFIG_ALL_KMODS=y) Runtime-tested: bcm2708, bcm2710 Signed-off-by: Stijn Tintel <stijn@linux-ipv6.be>
57 lines
1.7 KiB
Diff
57 lines
1.7 KiB
Diff
From e37bc7714591ac7a94200ee254a116904e19b784 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Mon, 29 Oct 2018 14:45:45 +0000
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Subject: [PATCH 436/454] Revert "rtc: pcf8523: properly handle oscillator stop
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bit"
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This reverts commit ede44c908d44b166a5b6bd7caacd105c2ff5a70f.
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See: https://github.com/raspberrypi/firmware/issues/1065
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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drivers/rtc/rtc-pcf8523.c | 25 ++++++++++++++++++++++---
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1 file changed, 22 insertions(+), 3 deletions(-)
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--- a/drivers/rtc/rtc-pcf8523.c
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+++ b/drivers/rtc/rtc-pcf8523.c
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@@ -178,8 +178,28 @@ static int pcf8523_rtc_read_time(struct
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if (err < 0)
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return err;
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- if (regs[0] & REG_SECONDS_OS)
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- return -EINVAL;
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+ if (regs[0] & REG_SECONDS_OS) {
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+ /*
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+ * If the oscillator was stopped, try to clear the flag. Upon
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+ * power-up the flag is always set, but if we cannot clear it
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+ * the oscillator isn't running properly for some reason. The
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+ * sensible thing therefore is to return an error, signalling
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+ * that the clock cannot be assumed to be correct.
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+ */
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+
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+ regs[0] &= ~REG_SECONDS_OS;
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+
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+ err = pcf8523_write(client, REG_SECONDS, regs[0]);
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+ if (err < 0)
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+ return err;
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+
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+ err = pcf8523_read(client, REG_SECONDS, ®s[0]);
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+ if (err < 0)
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+ return err;
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+
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+ if (regs[0] & REG_SECONDS_OS)
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+ return -EAGAIN;
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+ }
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tm->tm_sec = bcd2bin(regs[0] & 0x7f);
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tm->tm_min = bcd2bin(regs[1] & 0x7f);
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@@ -215,7 +235,6 @@ static int pcf8523_rtc_set_time(struct d
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return err;
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regs[0] = REG_SECONDS;
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- /* This will purposely overwrite REG_SECONDS_OS */
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regs[1] = bin2bcd(tm->tm_sec);
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regs[2] = bin2bcd(tm->tm_min);
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regs[3] = bin2bcd(tm->tm_hour);
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