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Message-ID: <20071010104540.GA6366@localhost.sw.ru> Date: Wed, 10 Oct 2007 14:45:40 +0400 From: Alexey Dobriyan <adobriyan@...ru> To: Al Viro <viro@....linux.org.uk> Cc: linux-kernel@...r.kernel.org, davej@...emonkey.org.uk, Pierre Ossman <drzeus@...eus.cx>, akpm@...l.org, linux-sparse@...r.kernel.org Subject: idio{,ma}tic typos (was Re: + fix-vm_can_nonlinear-check-in-sys_remap_file_pages.patch added to -mm tree) ["if (!x & y)" patch from yanzheng@] ["if (!x & y)" patch from adobriyan@] ["if (!x & y)" patches from viro@] While we're at it, below is somewhat ugly sparse patch for detecting "&& 0x" typos. diff --git a/evaluate.c b/evaluate.c index c0e9d17..186756b 100644 --- a/evaluate.c +++ b/evaluate.c @@ -877,6 +877,13 @@ static struct symbol *evaluate_logical(struct expression *expr) if (!evaluate_conditional(expr->right, 0)) return NULL; + if (expr->op == SPECIAL_LOGICAL_AND) { + if (expr->left->type == EXPR_VALUE && expr->left->orig_in_hex) + warning(expr->pos, "dubious && 0x"); + if (expr->right->type == EXPR_VALUE && expr->right->orig_in_hex) + warning(expr->pos, "dubious && 0x"); + } + expr->ctype = &bool_ctype; if (expr->flags) { if (!(expr->left->flags & expr->right->flags & Int_const_expr)) diff --git a/expression.c b/expression.c index 289927a..9bcf586 100644 --- a/expression.c +++ b/expression.c @@ -361,6 +361,7 @@ got_it: expr->flags = Int_const_expr; expr->ctype = ctype_integer(modifiers); expr->value = value; + expr->orig_in_hex = (str[0] == '0' && (str[1] == 'x' || str[1] == 'X')); return; Eoverflow: error_die(expr->pos, "constant %s is too big even for unsigned long long", @@ -70,6 +70,7 @@ struct expression { struct { unsigned long long value; unsigned taint; + unsigned int orig_in_hex:1; }; // EXPR_FVALUE Here are wonders that it found: drivers/media/video/se401.c:1283:13: warning: dubious && 0x if (!cp[2] && SE401_FORMAT_BAYER) { err("Bayer format not supported!"); return 1; } known issue, I sent a patch about it. drivers/mmc/host/tifm_sd.c:183:9: warning: dubious && 0x if ((r_data->flags & MMC_DATA_WRITE) && DATA_CARRY) writel(host->bounce_buf_data[0], host->dev->addr + SOCK_MMCSD_DATA); given that DATA_CARRY is always used together with ->cmd_flags, this place is asking for obvious fixlet: [PATCH] tifm_sd.c: fix DATA_CARRY check Signed-off-by: Alexey Dobriyan <adobriyan@...ru> --- drivers/mmc/host/tifm_sd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mmc/host/tifm_sd.c +++ b/drivers/mmc/host/tifm_sd.c @@ -180,7 +180,7 @@ static void tifm_sd_transfer_data(struct tifm_sd *host) host->sg_pos++; if (host->sg_pos == host->sg_len) { if ((r_data->flags & MMC_DATA_WRITE) - && DATA_CARRY) + && (host->cmd_flags & DATA_CARRY)) writel(host->bounce_buf_data[0], host->dev->addr + SOCK_MMCSD_DATA); drivers/net/wireless/arlan-main.c:439:3: warning: dubious && 0x drivers/net/wireless/arlan-main.c:439:3: warning: dubious && 0x drivers/net/wireless/arlan-main.c:439:3: warning: dubious && 0x drivers/net/wireless/arlan-main.c:439:3: warning: dubious && 0x #define setPowerOff(dev){\ writeControlRegister(dev,readControlRegister(dev) | (ARLAN_POWER && ARLAN_ACCESS)); ^^^ [PATCH] arlan: fix "x && y" typo Signed-off-by: Alexey Dobriyan <adobriyan@...ru> --- drivers/net/wireless/arlan.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/net/wireless/arlan.h +++ b/drivers/net/wireless/arlan.h @@ -485,7 +485,7 @@ struct arlan_private { #define clearClearInterrupt(dev){\ writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_CLEAR_INTERRUPT);} #define setPowerOff(dev){\ - writeControlRegister(dev,readControlRegister(dev) | (ARLAN_POWER && ARLAN_ACCESS));\ + writeControlRegister(dev,readControlRegister(dev) | (ARLAN_POWER & ARLAN_ACCESS));\ writeControlRegister(dev,readControlRegister(dev) & ~ARLAN_ACCESS);} #define setPowerOn(dev){\ writeControlRegister(dev,readControlRegister(dev) & ~(ARLAN_POWER)); } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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