[PATCH] i2c: bcm-iproc: Fix bcm_iproc_i2c_isr deadlock issue

[Wolfram Sang]

On Sat, Jun 24, 2023 at 07:36:02PM +0000, YE Chengfeng wrote:
> iproc_i2c_rd_reg and iproc_i2c_wr_reg are called from both
> interrupt context (e.g. bcm_iproc_i2c_isr) and process context
> (e.g. bcm_iproc_i2c_suspend). Therefore, interrupts should be
> disabled to avoid potential deadlock. To prevent this deadlock,
> use spin_lock_irqsave.
> 
> Signed-off-by: Chengfeng Ye <cyeaa at connect.ust.hk>

I can't apply it, what version is this against? Also, if someone could
supply a proper Fixes-tag, this would be much appreciated.

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