diff options
Diffstat (limited to 'drivers/bus/omap_l3_noc.c')
| -rw-r--r-- | drivers/bus/omap_l3_noc.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/drivers/bus/omap_l3_noc.c b/drivers/bus/omap_l3_noc.c index 343f002a06f7..7743e86e88b1 100644 --- a/drivers/bus/omap_l3_noc.c +++ b/drivers/bus/omap_l3_noc.c @@ -75,10 +75,41 @@ static irqreturn_t l3_interrupt_handler(int irq, void *_l3) if (err_reg) { /* Identify the source from control status register */ err_src = __ffs(err_reg); + + /* We DONOT expect err_src to go out of bounds */ + BUG_ON(err_src > MAX_CLKDM_TARGETS); + l3_targ_inst = &l3_targ[i][err_src]; target_name = l3_targ_inst->name; l3_targ_base = base + l3_targ_inst->offset; + /* + * If we do not know of a register offset to decode + * and clear, then mask. + */ + if (target_name == L3_TARGET_NOT_SUPPORTED) { + u32 mask_val; + void __iomem *mask_reg; + + /* + * Certain plaforms may have "undocumented" + * status pending on boot.. So dont generate + * a severe warning here. + */ + dev_err(l3->dev, + "L3 %s error: target %d mod:%d %s\n", + inttype ? "debug" : "application", + err_src, i, "(unclearable)"); + + mask_reg = base + l3_flagmux[i] + + L3_FLAGMUX_MASK0 + (inttype << 3); + mask_val = readl_relaxed(mask_reg); + mask_val &= ~(1 << err_src); + writel_relaxed(mask_val, mask_reg); + + break; + } + /* Read the stderrlog_main_source from clk domain */ l3_targ_stderr = l3_targ_base + L3_TARG_STDERRLOG_MAIN; l3_targ_slvofslsb = l3_targ_base + |