Staging: dwc2: Fix variable dereferenced before check
This patch fixes the following smatch warning in hcd_intr.c- drivers/staging/dwc2/hcd_intr.c:1946 dwc2_hc_n_intr() warn: variable dereferenced before check 'chan' (see line 1936) Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -1932,23 +1932,22 @@ static void dwc2_hc_n_intr(struct dwc2_hsotg *hsotg, int chnum)
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chan = hsotg->hc_ptr_array[chnum];
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chan = hsotg->hc_ptr_array[chnum];
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if (dbg_hc(chan))
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dev_vdbg(hsotg->dev, "--Host Channel Interrupt--, Channel %d\n",
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chnum);
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hcint = readl(hsotg->regs + HCINT(chnum));
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hcint = readl(hsotg->regs + HCINT(chnum));
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hcintmsk = readl(hsotg->regs + HCINTMSK(chnum));
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hcintmsk = readl(hsotg->regs + HCINTMSK(chnum));
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if (dbg_hc(chan))
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dev_vdbg(hsotg->dev,
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" hcint 0x%08x, hcintmsk 0x%08x, hcint&hcintmsk 0x%08x\n",
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hcint, hcintmsk, hcint & hcintmsk);
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if (!chan) {
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if (!chan) {
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dev_err(hsotg->dev, "## hc_ptr_array for channel is NULL ##\n");
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dev_err(hsotg->dev, "## hc_ptr_array for channel is NULL ##\n");
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writel(hcint, hsotg->regs + HCINT(chnum));
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writel(hcint, hsotg->regs + HCINT(chnum));
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return;
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return;
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}
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}
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if (dbg_hc(chan)) {
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dev_vdbg(hsotg->dev, "--Host Channel Interrupt--, Channel %d\n",
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chnum);
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dev_vdbg(hsotg->dev,
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" hcint 0x%08x, hcintmsk 0x%08x, hcint&hcintmsk 0x%08x\n",
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hcint, hcintmsk, hcint & hcintmsk);
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}
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writel(hcint, hsotg->regs + HCINT(chnum));
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writel(hcint, hsotg->regs + HCINT(chnum));
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chan->hcint = hcint;
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chan->hcint = hcint;
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hcint &= hcintmsk;
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hcint &= hcintmsk;
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