linux-kernel - Re: [PATCH 1/2] dmaengine: mv_xor

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Date:   Wed, 29 Mar 2023 13:55:05 +0300
From:   Dan Carpenter <error27@...il.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>
Cc:     Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>,
        Gregory CLEMENT <gregory.clement@...tlin.com>,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        dmaengine@...r.kernel.org
Subject: Re: [PATCH 1/2] dmaengine: mv_xor_v2: Fix an error code.

A bunch of false positives could be silenced by changing the assign
and return hooks to check for unsigned types:

static void match_assign(struct expression *expr)
{
        if (expr_unsigned(expr->left))
                return;
        warn_on_positive_error(expr->right);
}

static void match_return(struct expression *expr)
{
        struct symbol *type;

        type = cur_func_return_type();
        if (type_unsigned(type))
                return;

        warn_on_positive_error(expr);
}

regards,
dan carpenter