From: Matthew Wilcox <willy@infradead.org>
To: "Fabio M. De Francesco" <fmdefrancesco@gmail.com>
Cc: outreachy-kernel@googlegroups.com,
David Kershner <david.kershner@unisys.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
sparmaintainer@unisys.com, linux-staging@lists.linux.dev,
linux-kernel@vger.kernel.org, Daniel Vetter <daniel@ffwll.ch>,
Dan Carpenter <dan.carpenter@oracle.com>
Subject: Re: [PATCH v7] staging: unisys: visorhba: Convert module from IDR to XArray
Date: Tue, 4 May 2021 14:42:16 +0100 [thread overview]
Message-ID: <20210504134216.GG1847222@casper.infradead.org> (raw)
In-Reply-To: <20210504133253.32269-1-fmdefrancesco@gmail.com>
On Tue, May 04, 2021 at 03:32:53PM +0200, Fabio M. De Francesco wrote:
> Changes from v6; Added a call to xa_destroy() that I had forgotten.
What? No! Go back and re-read what I wrote about this previously.
> +static int setup_scsitaskmgmt_handles(struct xarray *xa, struct uiscmdrsp *cmdrsp,
> wait_queue_head_t *event, int *result)
> {
> - /* specify the event that has to be triggered when this */
> - /* cmd is complete */
> - cmdrsp->scsitaskmgmt.notify_handle =
> - simple_idr_get(idrtable, event, lock);
> - cmdrsp->scsitaskmgmt.notifyresult_handle =
> - simple_idr_get(idrtable, result, lock);
> + int ret;
> + u32 id;
> +
> + /* specify the event that has to be triggered when this cmd is complete */
> + ret = xa_alloc_irq(xa, &id, event, xa_limit_32b, GFP_KERNEL);
> + if (ret)
> + return ret;
> + else
> + cmdrsp->scsitaskmgmt.notify_handle = id;
This 'else' is actively confusing.
> + ret = xa_alloc_irq(xa, &id, result, xa_limit_32b, GFP_KERNEL);
> + if (ret) {
> + xa_erase_irq(xa, cmdrsp->scsitaskmgmt.notify_handle);
> + return ret;
> + } else
> + cmdrsp->scsitaskmgmt.notifyresult_handle = id;
Ditto.
next prev parent reply other threads:[~2021-05-04 13:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-04 13:32 [PATCH v7] staging: unisys: visorhba: Convert module from IDR to XArray Fabio M. De Francesco
2021-05-04 13:42 ` Matthew Wilcox [this message]
2021-05-04 13:58 ` Fabio M. De Francesco
2021-05-04 14:01 ` [Outreachy kernel] " Matthew Wilcox
2021-05-04 14:38 ` Fabio M. De Francesco
2021-05-04 15:46 ` Greg Kroah-Hartman
2021-05-04 13:46 ` Dan Carpenter
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