Hello Feng Kan,
The patch a91ae4eba9f9: "hwrng: xgene - add support for APM X-Gene
SoC RNG support" from Aug 22, 2014, leads to the following static
checker warning:
drivers/char/hw_random/xgene-rng.c:339 xgene_rng_probe()
warn: unsigned 'ctx->irq' is never less than zero.
drivers/char/hw_random/xgene-rng.c
335 if (IS_ERR(ctx->csr_base))
336 return PTR_ERR(ctx->csr_base);
337
338 ctx->irq = platform_get_irq(pdev, 0);
339 if (ctx->irq < 0) {
^^^^^^^^^^^^
Impossible for unsigned values.
340 dev_err(&pdev->dev, "No IRQ resource\n");
341 return ctx->irq;
342 }
343
344 dev_dbg(&pdev->dev, "APM X-Gene RNG BASE %p ALARM IRQ %d",
regards,
dan carpenter
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