Description
In the Linux kernel, the following vulnerability has been resolved: clk: spacemit: mark K1 pll1_d8 as critical The pll1_d8 clock is enabled by the boot loader, and is ultimately a parent for numerous clocks, including those used by APB and AXI buses. Guodong Xu discovered that this clock got disabled while responding to getting -EPROBE_DEFER when requesting a reset controller. The needed clock (CLK_DMA, along with its parents) had already been enabled. To respond to the probe deferral return, the CLK_DMA clock was disabled, and this led to parent clocks also reducing their enable count. When the enable count for pll1_d8 was decremented it became 0, which caused it to be disabled. This led to a system hang. Marking that clock critical resolves this by preventing it from being disabled. Define a new macro CCU_FACTOR_GATE_DEFINE() to allow clock flags to be supplied for a CCU_FACTOR_GATE clock.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1b72c59db0add8e47fa116b21f78ed0b09a264f3 to < 10948c00e548e9ad2ce9d765baf26dce2d9b806baffected1b72c59db0add8e47fa116b21f78ed0b09a264f3 to < 7554729de27daf6d54bcf8689d863bbe267828bfaffected
Linux Linux
Default version status: affected
6.16affected0 to < 6.16unaffected6.16.1 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected